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Từ điển WordNet v3.1 - WordNet Dictionary
nucleus


noun
1. a part of the cell containing DNA and RNA and responsible for growth and reproduction (Freq. 10)
Syn:
cell nucleus, karyon
Derivationally related forms:
nucleate
Hypernyms:
organelle, cell organelle, cell organ
Hyponyms:
pronucleus, subthalamic nucleus
Part Holonyms:
cell
Substance Meronyms:
nucleoplasm, karyoplasm
Part Meronyms:
nucleolus, nucleole, chromatin, chromatin granule, achromatin,
linin, chromosome
2. the positively charged dense center of an atom (Freq. 3)
Hypernyms:
center, centre, midpoint
Part Holonyms:
atom
Part Meronyms:
nucleon
3. a small group of indispensable persons or things (Freq. 3)
- five periodicals make up the core of their publishing program
Syn:
core, core group
Hypernyms:
set
Hyponyms:
cadre
4. (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
Topics:
astronomy, uranology
Hypernyms:
center, centre, midpoint
Part Holonyms:
comet
5. any histologically identifiable mass of neural cell bodies in the brain or spinal cord
Hypernyms:
neural structure
Hyponyms:
dentate nucleus
6. the central structure of the lens that is surrounded by the cortex
Syn:
lens nucleus
Hypernyms:
structure, anatomical structure, complex body part, bodily structure, body structure

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