convex vs concave
Definitions
adjective
- curving or bulging outward
Examples
The aerobrake - a huge, convex disc underneath the spacecraft - was producing friction with the Martian atmosphere.
The beak is smoth, black, convex and cultrated; one and 1/8 inches from the point to the opening of the chaps and 3/4 only uncovered with feathers; the upper chap exceeds the other a little in length. a few small black hairs garnish the sides of the base of the upper chap. the eye is of a uniform deep sea green or black, moderately large. it's legs feet and tallons are white; the legs are an inch and a 1/4 in length and smoth; four toes on each foot, of which that in front is the same length with the leg including the length of the tallon, which is 4 lines; the three remaining toes are
Starting from the cardiac orifice at the incisura cardiaca, it forms an arch backward, upward, and to the left; the highest point of the convexity is on a level with the sixth left costal cartilage.
Definitions
adjective
- curving inward
Examples
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.
