[ US /ˈnukɫiəs/ ]
[ UK /njˈuːklɪəs/ ]
  1. any histologically identifiable mass of neural cell bodies in the brain or spinal cord
  2. the positively charged dense center of an atom
  3. the central structure of the lens that is surrounded by the cortex
  4. a part of the cell containing DNA and RNA and responsible for growth and reproduction
  5. (astronomy) the center of the head of a comet; consists of small solid particles of ice and frozen gas that vaporizes on approaching the sun to form the coma and tail
  6. a small group of indispensable persons or things
    five periodicals make up the core of their publishing program
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How To Use nucleus In A Sentence

  • Fertilization therefore results in an egg carrying a nucleus with contributions from both parents, and it was concluded that the cell nucleus must contain the physical basis of heredity.
  • Immediately above the anterior perforated substance, the pear-shaped head of the caudate nucleus is confluent with the putamen of the lentiform nucleus.
  • A stimulant action on the parasympathetic portion of the oculomotor nucleus (third cranial nerve) is responsible for pupillary miosis.
  • Deuterium is a relatively insensitive nucleus because it has a low gyromagnetic ratio and the spectral intensity is generally spread over an extremely wide frequency range due to the quadrupole interaction.
  • The essential and indispensable element of the nucleus is called nuclein (or caryoplasm); that of the cell body is called plastin (or cytoplasm). The Evolution of Man — Volume 1
  • The strong force is the one that is dominant in the atomic nucleus, acting between the quarks inside the proton and the neutron.
  • When the Spanish landed in 1531, Peru's territory was the nucleus of the highly developed Inca civilization.
  • The spacecraft will orbit the comet's nucleus.
  • The complementary substances or substituent groups with which these nuclei are more or less firmly combined in nature exert a stabilizing and perhaps otherwise favorable influence on the curative nucleus, but do not themselves possess the vitamine type of physiological potency. The Vitamine Manual
  • The water going down your plughole, the planets going around the sun, the electrons spinning around a nucleus, they all reflect the same dynamic tension between opposing forces.
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