English dictionary



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English noun: nucleus

1. nucleus (body) a part of the cell containing DNA and RNA and responsible for growth and reproduction


Synonymscell nucleus, karyon


Broader (hypernym)cell organ, cell organelle, organelle


Narrower (hyponym)pronucleus, subthalamic nucleus


Part holonymachromatin, chromatin, chromatin granule, chromosome, linin, nucleole, nucleolus


Part meronymcell


Substance holonymkaryoplasm, nucleoplasm

2. nucleus (object) the positively charged dense center of an atom


Broader (hypernym)center, centre, midpoint


Part holonymnucleon


Part meronymatom

3. nucleus (group) a small group of indispensable persons or things


SamplesFive periodicals make up the core of their publishing program.


Synonymscore, core group


Broader (hypernym)set


Narrower (hyponym)cadre

4. nucleus (object) (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


Broader (hypernym)center, centre, midpoint


Part meronymcomet


Domain categoryastronomy, uranology

5. nucleus (body) any histologically identifiable mass of neural cell bodies in the brain or spinal cord


Broader (hypernym)neural structure


Narrower (hyponym)dentate nucleus

6. nucleus (body) the central structure of the lens that is surrounded by the cortex


Synonymslens nucleus


Broader (hypernym)anatomical structure, bodily structure, body structure, complex body part, structure









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