How To Use Concave In A Sentence

Ribs are straight or slightly biconcave and fade on the ventral surface where they merge into the lateral keel.
The cup-marked stone shown below, in the Sma’ Glen, near Crieff, Perthshire, Scotland, is situated in a large man-made concave-shaped amphitheatre in the hills, and has a prominent dumb-bell shaped cup-mark on its surface.
When healthy subjects looked at the concave faces, connections strengthened between the frontoparietal network, which is involved in top-down processing, and the visual areas of the brain that receive information from the eyes. Multi Medium
He is shown seated before his famous invention: a ruling machine for producing concave diffraction gratings, which are slightly curved metal plates scored with minutely spaced lines that diffract light into spectra.
From the tastefully appointed mosaic inlays and concaved walls adorned with statues and his paintings, the mosaic swimming pool and Japanese garden with plenty of creature comforts, make for unforgettable ambiance. San Antonio

Made of Austenitic stainless steel. There is no dead angle, no concave - convex face.
It presents a large, smooth, concave surface, called the iliac fossa, which gives origin to the Iliacus and is perforated at its inner part by a nutrient canal; and below this a smooth, rounded border, the arcuate line, which runs downward, forward, and medialward. II. Osteology. 6c. The Bones of the Lower Extremity. 1. The Hip Bone
Such cases are known as nearsightedness and are corrected by having placed in front of the eyes concave lenses of the proper strength. The Science of Human Nature A Psychology for Beginners
Already, too, from the piers, it would be able to be seen that the two slaves hung (pg. 426) from the outjutting display beams on either side of the concave bow of the Tais. Renegades Of Gor
The structure, designed by John B. Jervis, had blank walls, huge central and corner pylons, and a blank cavetto cornice, a concave bracket that lines the edge of many ancient Egyptian temples and facades. 19th-Century Egyptian Revivalism
McElwee contrasts convex and concave forms with building recesses and relief carvings.
Disc harrows consisting of gangs of concave steel discs are dragged at an angle to the line of draught.
The inferior has eight distinct ridges none of which reach the apex; these divide this strongly convex face into nine slightly concave facets, of which those adjacent to the carinae are the widest, (Fig. 36, A.) side view, natural size, (Fig. 37,) viewed from the point, showing the division into parts and its polygonal form. Report of the North-Carolina Geological Survey. Agriculture of the Eastern Counties: Together with Descriptions of the Fossils of the Marl Beds
Only this bike offers adjustability for toe-in in its road brakes via concave/convex washers.
More closely connected works explore elevated horizontal structures like that of "Bouquet of Concaves," while further variations—curves and polychromy that both enhances and defies three-dimensional form—are proposed by other, even more intimately related sculptures. Works of Many Dimensions
The _fourth glume_ is broadly ovate, or suborbicular, very concave, coriaceous, transversely rugulose, yellowish brown. A Handbook of Some South Indian Grasses
Negative refraction implies that a converging lens made from negative-index material should have a concave surface rather than a convex one.
Where the old car had concave surfaces on the doors, the new doors swell outwards, lending more bulk to the profile.
The cup-marked stone shown below, in the Sma’ Glen, near Crieff, Perthshire, Scotland, is situated in a large man-made concave-shaped amphitheatre in the hills, and has a prominent dumb-bell shaped cup-mark on its surface.
As the enamel shrinks on melting and cools with a concave surface, more has to be poured in and the process repeated.
Hard-wearing though they are, with the passing of time these tiles became slightly concave, so that the pointing lines formed raised ridges.
The moment method is used to calculate the static charge and current distribution on the antennas and the concave surface, respectively.
Disposition has also its concave and convex lenses, which magnify some things and minify others. The True Citizen, How to Become One
Galileo's telescope consisted of two lenses -- one plano-convex, the other plano-concave, the latter being held next the eye. The Astronomy of Milton's 'Paradise Lost'
The _first glume_ is concave, pale yellow, shining and cartilaginous to about 2/3 its length from the base, and the upper third is membranous, dimidiately ovate; at the back in the cartilaginous portion, there are three to six deep convex smooth ridges running across the glume; the membranous tip is thin and with anastomosing green veins; the margins of this glume are thick, narrowly incurved, ciliolate, and with a narrow wing on the outer margin. A Handbook of Some South Indian Grasses
The horns of the male are sub-triangular, much compressed laterally and posteriorly; in fact one may say concave at the sides, that is, from the base of the horn to about one half; transversely sulcated; curving outwards, and returning inward towards the face; points convergent. Natural History of the Mammalia of India and Ceylon
The _fourth glume_ is broadly ovate, or suborbicular, very concave, coriaceous, transversely rugulose, yellowish brown. A Handbook of Some South Indian Grasses
This eminence is concave above, and articulates with the middle calcaneal articular surface of the talus; below, it is grooved for the tendon of the Flexor hallucis longus; its anterior margin gives attachment to the plantar calcaneonavicular ligament, and its medial, to a part of the deltoid ligament of the ankle-joint. II. Osteology. 6d. The Foot. 1. The Tarsus
Pictures of bound feet show the toes bent right under the sole, which is so curved it is concave.
As this margin inclines dorsally, it sweeps around in a distally concave arc to produce a rounded, distally pointing extremity adjacent to the dorsal margin.
He likened this to asking an artisan to explain how the convex surface of a peg can possibly fill that of a concave hole.
A steady-state example would be a concavo-convex slope profile with a concave lower portion and a convex upper slope typical of humid climates.
The anterior slope is long and straight to weakly convex, while the posterior slope is concave and more steeply inclined than that of N. hazeni.
This species is at once known from Chelodina longicollis by the form of its high, flat sternum, which is strongly keeled on the sides, and by this part being of a uniform reddish colour, without any dark margin to the plates; the hinder part of the sternum is only slightly concavely truncated, and not deeply notched. Journals of Two Expeditions of Discovery in North-West and Western Australia, Volume 2
In general, the north sides are concave in both their horizontal and vertical sections, having been sculptured into this shape by the residual glaciers that lingered in the protecting northern shadows, while the sun-beaten south sides, having never been subjected to this kind of glaciation, are convex or irregular. The Yosemite
Galileo's telescope had a convex object lens but a concave eye-piece.
Pit 3 is located 25 meters to the north of Pit 1 and to the west of Pit 2. The plane of the pit is of concave shape, totaling about 520 square meters.
I examined three key technical properties of this proposed concave - mirror projector.
For the double-ended ramrods, one end is threaded for cleaning attachments and the other end shaped concave for loading a patched round lead ball over 30 grains of powder.
If the outside edges appear to get sanded first, yet the middle part isn't affected, then you have a concave surface.
The disk has no nucleus, but, in consequence of its biconcave shape, presents, according to the alterations of focus under an ordinary high power, a central part, sometimes bright, sometimes dark, which has the appearance of a nucleus (Fig. 453, a). V. Angiology. 2. The Blood
In order to facilitate the preparation of the main processing parts concave shape, the punch process.
For medium and large optical concave lens into a set or single piece of fine grinding process.
This contact opening 8 has a concavo-concave shape; that is, both sides of the opening have a concave shape.
Accordingly, a radio telescope consists of a concave metal reflector that focuses the radio waves on a receiver.
Left anterior auricle shallow, with straight dorsal margin and obtuse, outwardly concave anterior margin lacking a byssal sinus.
These yellowish points or crusts increase in size, become usually as large as small peas, are cup-shaped, with the convex side pressing down upon the papillary layer, and the concave side raised several lines above the level of the skin; they are umbilicated, friable, sulphur-colored, and usually each cup or disc is perforated by Essentials of Diseases of the Skin Including the Syphilodermata Arranged in the Form of Questions and Answers Prepared Especially for Students of Medicine
The combines were operated in high-yielding corn using a wide combination of cylinder or rotor speeds, concave clearances, sieve settings, cleaning fan speeds and ground speeds.
Genetic defects of the red cell membrane may cause the red cells to assume a spherical rather than a biconcave shape, or alter their configuration to an elliptical form.
The concave shape behind the spoon head can reduce the pressure to fingers during peeling.
The Björk-Shiley convexo-concave prosthetic valve was introduced in 1979.
Again, the more ancient Crocodilia and Lacertilia have vertebrae with the articular facets of their centra flattened or biconcave, while the modern members of the same group have them procoelous. Essays
The samples were then prepared on concave microscope slides under coverslips and sealed with silicone grease.
You stand in a dark room looking at a round concave surface perhaps five feet in diameter.
Concave lenses with minus or divergent power correct this refractive error and refocus the light rays on the correct point on the retina.
This is wrapped in a rhomboidal grid, like a giant fishing net, infilled with a mixture of flat, concave and convex panels of glass.
-- Muzzle, ear-conch, and tragus similar to those of _M. lyra_; the posterior portion of the tragus, however, is longer and more attenuated upwards, and more acutely pointed; the nose-leaf is shorter, with convex sides; but the anterior concave disc is considerably larger, and the base of the thickened process is cordate; thumbs and wings as in _M. lyra_; interfemoral membrane deeper; the calcaneum stronger; colour the same. Natural History of the Mammalia of India and Ceylon
I sent Lieutenants Amir and Yusuf to prospect certain stone-heaps which lay seawards of the graves; and they found a little heptangular demi-lune, concave to the north; the curtains varying from a minimum length of ten to a maximum of eighty me'tres, and the thickness averaging two metres, seventy-five centimetres. The Land of Midian — Volume 1
This was not an artifact, as those erythrocytes fixed within the blood vessels retained a normal biconcave shape.
Every part of the immense observatory and of the telescope is of American production, with the single important exception of the cast glass disc from which the two principal lenses, the one double convex and the other plano-concave, are produced. Notable Events of the Nineteenth Century Great Deeds of Men and Nations and the Progress of the World
A preformed metal ball held in the concave mouth is bonded to the metal pad of the integrated circuit.
The concavo-concave shape of the anticlinal cell walls adjacent to the guard cells, reflects the bowed shape of the guard cells.
Under high power unstained red blood cells appear as pale, homogeneous, biconcave discs with no nucleus.
Cabbage, round, of firm texture, sometimes revolute, but generally erect, and concave; the nerves are white, more numerous and less delicate than those of the last-named variety; the stalk is short, and the leaves not composing the head few in number. The Field and Garden Vegetables of America Containing Full Descriptions of Nearly Eleven Hundred Species and Varietes; With Directions for Propagation, Culture and Use.
Concave lenses with minus or divergent power correct this refractive error and refocus the light rays on the correct point on the retina.
Medially the fibular facet doubles in width, becomes slightly concave with a smoothly rounded, raised margin, and faces principally dorsolaterally but also slightly proximally.
Got a good one on the last quiz ... the correct answer to the question was "convex" (the shape) the student was apparently thinking "concave" (a related shape) « Reply #454 on: Yesterday at 02: 16: 41 PM » Wired Campus
The invention provides a method with a concave lens focus as a welding heat source and a welding device thereof.
The bottoms of my bars of Dial soaps are deeply sculptured while the tops are mildly concaved. Mouse Print»Blog Archive » Skimpy Peanut Butter — Part 2
The groined roofs rose from six columns on each side, carved with the rarest skill; and the manner in which the crossings of the concave arches were bound together, as it were, with appropriate ornaments, were all in the finest tone of the architecture of the age. The Talisman
This is a small group of specialized ellesmerocerids with a concave outline of siphuncle segments.
A concave lens has been substituted for the collimator and slit, and besides other advantages, a great saving in length is secured by this change. Scientific American Supplement, No. 601, July 9, 1887
If the lids are not concave in 24 hours and/or if they go "boing" when you press them the next day - put them in the fridge, and eat them first. White Peaches and Basil Preserves
The junctions with spacings of 5-30 mum presented concavo-concave morphologies, and the spacings could be changed with the growth conditions.
The mouth is usually on the concave side, and the tentacles originate on the rim of the umbrella.
The PS3 bevels out in the middle so the front and back will be smaller while the XBOX360 is concave so the middle will be smaller. EXTRALIFE – By Scott Johnson - Look how small the Revolutions is
Nothing greeted her touch but a smooth, gently concave surface. JADE ISLAND
The seventh cervical vertebra is biconcave and is well preserved.
She leaned pensively on the little open casement, and in deep thought fixed her eyes on the heaven, whose blue unclouded concave was studded thick with stars, the worlds, perhaps, of spirits, unsphered of mortal mould. The Mysteries of Udolpho
The samples were then prepared on concave microscope slides under coverslips and sealed with silicone grease.
At the junction on each side of trochantin and post-clypeus is a concave process for articulation with the ginglymus of the mandible.
Instances of the word are not frequent, possibly because we had another word for empty (_toom_) in common with the Danes; but perhaps there was no necessity for dwelling upon it in the sense of _empty_; it was only its application as an epithet to a _concave_ or _hollow shield_ that your question could have had in view. Notes and Queries, Number 19, March 9, 1850
On Grand this deformation will take the form of a concave window - what Diller calls a "dimple" - overlooking the avenue and framing a large conference room. Latimes.com - News
The under, or concave, side of the voussoir is called the intrados or soffit, and the upper, or convex, side, the extrados of the arch. The Catholic Encyclopedia, Volume 1: Aachen-Assize
Using the concave roller to carefully roll the spline into the groove over the screen.
[Footnote: The egg-and-dart is found only on the ovolo, the leaf-and-dart only on the cyma reversa or the cyma recta (concave above and convex below) Both ornaments are in origin leaf-patterns one row of leaves showing their points behind another row.] A History of Greek Art
The tray is reversible with one side having molded-in carpet and the other a concave surface to keep dirt and water from the rest of the vehicle.
A primary concave parabolic mirror converges the light to one focus of a concave ellipsoidal mirror.
It has a wide hinge line, and one concave valve, which may be either brachial or pedicle.
The patient in this case study has a fistula in a concave area near his gastrostomy tube.
The concave roof of the island building, supported by beams suspended in tension, has its center in the sky.
In this case prevention may be brought about either by shoeing with a shoe whose ground surface is wholly concave, or by bevelling off the sharp border (see Fig. 110, _a_, p. 236). Diseases of the Horse's Foot
The volar surface is concave above, and elevated at its lower and lateral part into a rounded projection, the tubercle, which is directed forward and gives attachment to the transverse carpal ligament and sometimes origin to a few fibers of the Abductor pollicis brevis. II. Osteology. 6b. The Hand. 1. The Carpus
The upper surfaces of the menisci are concave, and in contact with the condyles of the femur; their lower surfaces are flat, and rest upon the head of the tibia; both surfaces are smooth, and invested by synovial membrane. III. Syndesmology. 7b. The Knee-joint
An approach is proposed, which emphasizes the importance of concave lens which can scatter the laser and make it an ideal signal source to be captured by the CCD lens.
Red blood cell with a biconcave disc shape is to provide a large surface area to volume ratio to facilitate the diffusion of gases.
Correlated with this peculiarity the maxilla usually has the tomia sinuated, and is generally concave, and smaller and narrower than the mandible, which is also concave to receive the palatal knob. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"
They differ, however, in having a flat rather than a concave pseudointerarea, and in having a tubular projection extending from larval shell.
Above it, to signal the presence of occupied space, is a shallow concave circle dug out of the ground.
A pad member 15 is securely attached to a concave side 13 of the convexo-concave member 11 and is made of absorbent cotton material.
Convex, flat and concave rhomboid units clad the building's distinctive dia-grid structure to produce remarkable visual effects.
The sima or gutter-facing, whose profile is here a cyma recta (concave above and convex below), is enriched with sculptured floral ornament. A History of Greek Art
SHADOW of this equatorial line to be thrown on the vast concave of the Sky, this shadow would in astronomical parlance coincide with the Pagan and Christian creeds: their origin and meaning
Also, if snubness be a concavity of the nose, and there be a snub nose, there is therefore a ‘concave-nose nose’. On Sophistical Refutations
Ears -- lobe descending oval, traversed by a hollow, antitragus concave; lobe separated from cheek. The Ear in the Wall
Real red blood cells owe their astonishing agility to their "biconcave" or tyre-like shape, and to get the same kind of synthetic particles, Samir Mitragotri and his team got their inspiration from the way real red blood cells acquire their final shape in the body. Dailyindia.com News Feed
The human blood-corpuscle is a non-nucleated, biconcave disc, having a diameter of about 1/3500 of an inch. Aids to Forensic Medicine and Toxicology
Depressions are concave regions on protein surfaces that have no constriction at the mouth.
Gaussian curvature is positive for surfaces like a hemisphere, which are either concave or convex in all the directions.
In either event you must check to see that the jars are sealed, with concave lids, and that they don't "boing" when you press on the top. Toast:
Nothing greeted her touch but a smooth, gently concave surface. JADE ISLAND
The shell is slightly prosocline, very weakly inflated, and strongly inequivalve, with concave left valve and weakly convex right one.
A sleek and shiny ship shaped like a rhombus with concave edges came spiraling in, then extended a large tripod and landed on the flat roof of one of the buildings.
Lieutenants Amir and Yusuf to prospect certain stone-heaps which lay seawards of the graves; and they found a little heptangular demi-lune, concave to the north; the curtains varying from a minimum length of ten to a maximum of eighty me’tres, and the thickness averaging two metres, seventy-five centimetres. The Land of Midian
The higher the value, the nearer the siphuncle is toward the concave side of the conch.
The _third glume_ is broadly elliptic or ovate, concave, awned, 3-nerved, with margins densely bearded above the middle and sparsely bearded dorsally on both the sides of the mid-nerve; the _palea_ is oblanceolate, as long as the glume, folded inside along the margins and outside along the middle, enclosing three _stamens_ and _ovary_. A Handbook of Some South Indian Grasses
This was unusual: a concave-sided pyramid roof supporting a high flèche rising above a Perpendicular gothic square tower to create a profile curiously reminiscent of the Empire State Building.
A new species belonging to the tribe of Solitary Wasps, _Odynerus clavicornis_, is perhaps the most interesting insect in the collection; this Wasp has clavate antennæ, the flagellum being broadly dilated towards the apex, convex above and concave beneath. Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology
[Footnote: The egg-and-dart is found only on the ovolo, the leaf-and-dart only on the cyma reversa or the cyma recta (concave above and convex below) Both ornaments are in origin leaf-patterns one row of leaves showing their points behind another row.] A History of Greek Art
Objectives To explore the feasibility and rationality of body temperature detecting in upper concave of clavicle.
It's referred to as the "fishbowl" because of the concave translucent panels that form half of the wall space surrounding it. The Heavyweights
They are generally in blue, green, white or occasionally amethyst glass, and are often cut with shallow, concave hollow diamonds.
The stem is attached at the concave margin, where the cap is auriculate and has a prominent boss or elevation, and bent at right angles with a characteristic curve. Studies of American Fungi. Mushrooms, Edible, Poisonous, etc.
Some are flared - that is, thicker at the rim than the center, like a concave lens.
If the declivity is gentle, it can be drained by sodded, concave avenues; but if too steep for that, it must be benched or terraced, which is more expensive. Resources of the Southern Fields and Forests, Medical, Economical, and Agricultural. Being also a Medical Botany of the Confederate States; with Practical Information on the Useful Properties of the Trees, Plants, and Shrubs
A distinguishing feature of the echinoids is that the ossicles imbricate and are fused into a globular or discoidal test; its flattened or concave oral side faces the substratum and the aboral side is arched in most species.
The _second_ _glume_ is shorter than the first, chartaceous to a certain extent, ovate-lanceolate, acuminate, concave, terminating in a fine scabrid awn, A Handbook of Some South Indian Grasses
The dorsal surfaces of the frontals (on the top of the skull) possess large depressions while the ventral surfaces of the zygomatic processes (the structures that project laterally from the cheek regions) are strongly concave, again unlike the condition in other mysticetes. From cigar to elongated, bloated tadpole: rorquals part II
The binate leaves have a flat or slightly concave under-surface.
The _normal membrane_ is concave as a whole on its meatal aspect; it occupies a doubly oblique plane, being so placed that its superior and posterior parts are nearer the eye of the examiner than the anterior and inferior parts. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition.
This stone spans a large channel 2ft. 3in. wide, within which is fitted a very thick lead pipe, gradually narrowed _horizontally_ and turned up under the _ovolo_ concave stone. The Excavations of Roman Baths at Bath
-- Muzzle long and narrow; skull very concave between the nasal bones and the vertex, so that the crown appears considerably vaulted; ears funnel-shaped and semi-transparent; tragus very long, narrow and pointed; wings very wide; tail longer than head and body, wholly contained within the interfemoral membrane. Natural History of the Mammalia of India and Ceylon
At the centre of the face was a concave portion and Nuadu knew that the jutting bone of the nose had gone.
The initial eluent was 2.5% water in acetonitrile for 4 min, followed by a slightly concave gradient reaching 25% water at 12 min.
At some point they discovered that in the centre of his chest, there was a tiny, concave indentation.
For man bends his legs convexly, a bird has his bent concavely; again, man bends his arms and legs in opposite directions, for he has his arms bent convexly, but his legs concavely. On the Gait of Animals
Yet Stork determined the probable focal length of a concave mirror made by inverting and silvering the convex mirror shown in the painting.
With his free hand, he picked up a small paint brush and resumed painting the concave interior, where a detailed scene of army camp life was almost complete.
Choose only firm tubers and look for those with tiny sprouts showing on their upper, concave surfaces.
He talks continuously even as he keeps working with concave cutters, trunk splitters, shears and tweezers.
[MICROCRINUS CONOIDEUS] Body conical; sub-pentangular at base; areas five, oblique; pores six or seven to each, alternating and arranged in rows, separated by a ridge; apical pores five, base wide; beneath concave; concavity intersected by five bars, which descend and meet in the center; spaces between, triangular, terminating above in the apical pores. Report of the North-Carolina Geological Survey. Agriculture of the Eastern Counties: Together with Descriptions of the Fossils of the Marl Beds
Similar double curvatures were used for concave lenses, and even more complicated corrections for astigmatism.
Accordingly, a radio telescope consists of a concave metal reflector that focuses the radio waves on a receiver.
The exterior walls were composed of concave and convex red bricks.
There, two lenses were made, one plano-convex, and the other plano-concave, and these were placed in a tube made of sheet copper. Little Journeys to the Homes of the Great - Volume 12 Little Journeys to the Homes of Great Scientists
At the center of the concave side, where the ureters and veins issue and arterial vessels and nerves usually enter, is the hilus.
Standard cylindrical lenses are plano-convex or plano-concave in form. Optics.org all content
Galileo's telescope had a convex object lens but a concave eye-piece.
This incised brass tray was described by its owner as a Benares tray, but it is thought the scalloped cavetto concave moulding and figural decoration mean it is more likely the work of the Jaipur school of art in Rajasthan, India, dating from 1890-1900. Antiques slide show – Egyptian bracelets and Meukow cognac
The exterior walls were composed of concave and convex red bricks.
Tooling mortar joints with a steel jointer - whether concave, vee, or grapevine - makes the wall more attractive and smooths the joints to a more weather-resistant finish.
The word "cabling" by itself indicates a convex circular moulding sunk in the concave fluting of a classic column, and rising about one-third of the height of the shaft. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"
Its profile may show anything from a rather gentle concave upward curve to a series of complex scarps and sediment-filled basins.
The smooth external surface of the axial rings of the anterior seven segments in the thorax of S. pronus suggests that the thorax could be flexed strongly both concavely and convexly.
The steady-state profile is convexo-concave, and the convexity has a width corresponding exactly to the area where the first term is dominant.
In order to facilitate the preparation of the main processing parts concave shape, the punch process.
It has a large posterior auricle that has a concave posterior margin meeting the hinge at an acute angle.
Openings are made having concavo-concave profiles which can provide a wider conducting cross-sectional area.
I knew because she had koilonychia, concave, spoon-shaped nails. Simple Skin Beauty
The north face of the building is concave, completing the elliptical pattern that begins in the courtyard.
The fixed stars which enamel and bespangle the concave expanse, or canopy of heaven, by numbers and lustre, make the night beauteous and delightful, which would otherwise be dark and horrible. A Museum for Young Gentlemen and Ladies Or, a Private Tutor for Little Masters and Misses
[CIDARIS CAROLINENSIS] small tubercles with two in a row, and interspersed with minute ones, which appear in some places to be arrayed in subordinate rows; interambulacral areas wide, covered with small subequal and rather prominent tubercles, among which minute granules are scattered; area about four times as wide as the former; plates pentagonal, supporting two rows of large perforated primary tubercles, surrounded by plain circular zones; miliary zone concave or depressed. Report of the North-Carolina Geological Survey. Agriculture of the Eastern Counties: Together with Descriptions of the Fossils of the Marl Beds
Disc harrows consisting of gangs of concave steel discs are dragged at an angle to the line of draught.
The round, concave shape of the wok means the whole wok becomes a cooking surface, making optimum use of the heat.
Inside, the skylit cylinder's concave interior seems a vast space to fill.
Again a concave action is required, but it is coupled with an axial rotation of the spine.
Their points, closely examined, were seen to be finely bearded or barbed, and shaped like an awl, that is, a little concave, to give the barbs effect. The Maine Woods
Similar double curvatures were used for concave lenses, and even more complicated corrections for astigmatism.
They have been made in many shapes: triangular or trapeziform, ‘pig's head’ shape (a trapezium with concave ‘cheeks’, popularly known in Italy as strumento di porco), wing or harp-shaped, or rectangular.
Real red blood cells owe their astonishing agility to their "biconcave" or tyre-like shape. Fight Aging!
The cone would then float up into the concave funnel and constrict the water passage, thus throttling its flow.
_Fluthwerk_ and 'hydraulicking' would easily wash down the whole alluvial and auriferous formation to the floor of grey granite which has supplied the huge 'cankey-stones' [Footnote: This proto-historic implement, also called a 'saddle-quern,' is here made out of a thick slab of granite slightly concave and artificially roughened. To The Gold Coast for Gold, Vol. II A Personal Narrative
The wide concave of cloud, of the monotonous hue of dull pewter, formed an unbroken hood over the level from horizon to horizon; beneath it, reflecting its wan lustre, was the glazed high-road which stretched, hedgeless and ditchless, past a directing-post where another road joined it, and on to the less regular ground beyond, lying like a riband unrolled across the scene, till it vanished over the furthermost undulation. The Hand of Ethelberta
The first surface of the head support arm is concave and the second surface of the head support arm is convex.
The body is prismoid in form, tapers gradually from the tarsal to the phalangeal extremity, and is curved longitudinally, so as to be concave below, slightly convex above. II. Osteology. 6d. 2. The Metatarsus
Lingually, these cusps are flat or slightly concave from apex to base, while their labial sides are convex along their height and in cross section.
Colored or red corpuscles (erythrocytes), when examined under the microscope, are seen to be circular disks, biconcave in profile. V. Angiology. 2. The Blood
During thermolysis of blood the erythrocytes transition from biconcave discs to spherocytes.
The stone includes a depression on its concave surface where the practitioner's finger was inserted in order to assist in applying force.
In the aftermath, there was a perfectly concave indention in the marble floor where Atomahawk had knelt. Masked
The reverse view turns the concavities of the title into convexities, countering them with horizontal concave planes. Works of Many Dimensions
shaped concavely
Fruit a trigonous, biconvex, or biconcave achene; seed with straight or curved embryo and copious endosperm. Find Me A Cure
Dressed for the final day in a blue V-neck chemise, with a gold necklace draped across his concave, hairless chest and the gold championship bracelet weighing down his wrist, Stuey dextrously shuffled his small pile of chips with his chopstick-thin fingers. One of a Kind
The agitator or pulsator is a propeller-like device, usually a concave disc fixed to the center, that creates the vertical-axis rotating action.
The surfaces of the concave lens may be proportioned so as to aberrate exactly equal to the convex lens
Inside, the skylit cylinder's concave interior seems a vast space to fill.
The long toe becomes "dished" -- that is, concave from the coronet to the ground -- the long quarters curl forward and inward and often completely cover the frog and lead to contraction of the heels, or the whole hoof bends outward or inward, and a crooked foot, or, even worse, Special Report on Diseases of the Horse
In scoliosis, the anatomy is deranged not only at each vertebral level but also between the convex and concave sides of the curve in the spine.
Three Figures Beneath a Tree" 1907-8 features women with lidless almond-shaped eyes, and faces with strange concave surfaces - depicted in a shallow stage set full of sharp wrinkles and ridges. Blockbuster Picasso show in Richmond must be seen, but it's not all masterpieces
For he bends his arms concavely and his legs convexly. On the Gait of Animals
Leaves succubous, circular to oblong-ovate, rounded, usually with very conspicuous yellow gemmae produced at the upper margins, concave, costa none.
The anterior face is convex and cribbled by openings, and the inferior face is concave, forming the sole. Common Diseases of Farm Animals
Some failure in tension has occurred in the elements above the anomalous region where the flexural bending is concave downwards.
Various lines and shapes show planes of light reflections to the viewer. Convex and concave areas make for exciting shapes. Realistic design should look like a natural object .
On such a morning, then, when the vast concave of the heavens, expanded in a perfectly spotless azure sky (such as in our foggy isle is never seen); and with the freshness of the bush developing its verdure in the odorous exudations of floriferous plants, and the blithesome exuberance of the songless denizens of nature's nemoral aviary; William took his departure on the mission we have detailed in the last chapter. Fern Vale (Volume 1) or the Queensland Squatter
The body is prismoid in form, and curved, so as to be convex in the longitudinal direction behind, concave in front. II. Osteology. 6b. 2. The Metacarpus
This syndesmosis is formed by the rough, convex surface of the medial side of the lower end of the fibula, and a rough concave surface on the lateral side of the tibia. III. Syndesmology. 7c. Articulations between the Tibia and Fibula
Plane mirrors, convex lens and concave lens.
The women of St Margaret's are neither tough nor butch - they range from a 50-year-old mother of three with perfectly coiffed blonde hair and a pink polo shirt to a landscape gardener with a concave stomach and myriad tattoos.

How To Use Concave In A Sentence

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