nucleus

(noun)

noun

1. a part of the cell containing DNA and RNA and responsible for growth and reproduction

Similar word(s): karyon

Definition categories: body, organelle

2. the positively charged dense center of an atom

Definition categories: object, center, centre, midpoint

3. a small group of indispensable persons or things

Similar word(s): core

Definition categories: group, set

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

Definition categories: object, center, centre, midpoint

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

Definition categories: body

6. the central structure of the lens that is surrounded by the cortex

Definition categories: body, structure

Sentences with nucleus as a noun:

- This collection will form the nucleus of a new library.