1. nucleus - noun
· a part of the cell containing DNA and RNA and responsible for growth and reproduction
Synonym(s): cell_nucleus, karyon
Hypernym(s): organelle, cell_organelle, cell_organ
2. nucleus - noun
· the positively charged dense center of an atom
Hypernym(s): center, centre, midpoint
3. nucleus - noun
· a small group of indispensable persons or things; "five periodicals make up the core of their publishing program"
Synonym(s): core, core_group
Hypernym(s): set
4. nucleus - noun
· (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
Hypernym(s): center, centre, midpoint
5. nucleus - noun
· any histologically identifiable mass of neural cell bodies in the brain or spinal cord
Hypernym(s): neural_structure
6. nucleus - noun
· the central structure of the lens that is surrounded by the cortex
Synonym(s): lens_nucleus
Hypernym(s): structure, anatomical_structure, complex_body_part, bodily_structure, body_structure
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