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

• cell nucleus
• karyon

2. (noun) a small group of indispensable persons or things

• core
• core group

3. (noun) the central structure of the lens that is surrounded by the cortex

• lens nucleus

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

• cell organ
• cell organelle
• organelle

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

• center
• centre
• midpoint

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

• set

4. (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

• center
• centre
• midpoint

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

• neural structure

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

• anatomical structure
• bodily structure
• body structure
• complex body part
• structure

1. (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

• astronomy
• uranology

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

• pronucleus
• subthalamic nucleus

2. (noun) a small group of indispensable persons or things

• cadre

3. (noun) any histologically identifiable mass of neural cell bodies in the brain or spinal cord

• dentate nucleus

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

• nucleate