nucleus
English Thesaurus
1. the central structure of the lens that is surrounded by the cortex (noun.body)
2. a part of the cell containing DNA and RNA and responsible for growth and reproduction (noun.body)
| hyponym | : | pronucleus, |
| definition | : | the nucleus of the ovum or sperm after fertilization but before they fuse to form the nucleus of the zygote (noun.body) |
| hyponym | : | subthalamic nucleus, |
| definition | : | an oval mass of grey matter located in the caudal part of the subthalamus; associated with the striate body (noun.body) |
| part holonym | : | nucleole, nucleolus, |
| definition | : | a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis (noun.body) |
| part holonym | : | chromatin, chromatin granule, |
| definition | : | the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins; during mitotic division it condenses into chromosomes (noun.body) |
| part holonym | : | achromatin, |
| definition | : | the part of a cell nucleus that is relatively uncolored by stains or dyes (noun.body) |
| part holonym | : | linin, |
| definition | : | an obsolete term for the network of viscous material in the cell nucleus on which the chromatin granules were thought to be suspended (noun.body) |
| part holonym | : | chromosome, |
| definition | : | a threadlike strand of DNA in the cell nucleus that carries the genes in a linear order (noun.body) |
| part meronym | : | cell, |
| definition | : | (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals (noun.tops) |
| substance holonym | : | karyoplasm, nucleoplasm, |
| definition | : | the protoplasm that constitutes the nucleus of a cell (noun.body) |
3. any histologically identifiable mass of neural cell bodies in the brain or spinal cord (noun.body)
| hypernym | : | neural structure, |
| definition | : | a structure that is part of the nervous system (noun.body) |
| hyponym | : | dentate nucleus, |
| definition | : | a large laminar nucleus of grey matter within the white matter of each cerebral hemisphere (noun.body) |
4. a small group of indispensable persons or things (noun.group)
| hypernym | : | set, |
| definition | : | a group of things of the same kind that belong together and are so used (noun.group) |
| hyponym | : | cadre, |
| definition | : | a nucleus of military personnel capable of expansion (noun.group) |
5. the positively charged dense center of an atom (noun.object)
| hypernym | : | center, centre, midpoint, |
| definition | : | a point equidistant from the ends of a line or the extremities of a figure (noun.location) |
| part holonym | : | nucleon, |
| definition | : | a constituent (proton or neutron) of an atomic nucleus (noun.object) |
| part meronym | : | atom, |
| definition | : | (physics and chemistry) the smallest component of an element having the chemical properties of the element (noun.substance) |
6. (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 (noun.object)
| hypernym | : | center, centre, midpoint, |
| definition | : | a point equidistant from the ends of a line or the extremities of a figure (noun.location) |
| part meronym | : | comet, |
| definition | : | (astronomy) a relatively small extraterrestrial body consisting of a frozen mass that travels around the sun in a highly elliptical orbit (noun.object) |
| domain category | : | astronomy, uranology, |
| definition | : | the branch of physics that studies celestial bodies and the universe as a whole (noun.cognition) |
7. a part of the cell containing DNA and RNA and responsible for growth and reproduction (noun.body)
| derivation | : | nucleate, |
| definition | : | form into a nucleus (verb.stative) |
| derivation | : | nucleate, |
| definition | : | form into a nucleus (verb.stative) |
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