Dictionary

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nucleus

English

🔊 a part of the cell containing DNA and RNA and responsible for growth and reproduction
🔊 any histologically identifiable mass of neural cell bodies in the brain or spinal cord
🔊 the positively charged dense center of an atom
🔊 (astronomy) the center of the head of a comet
🔊 the central structure of the lens that is surrounded by the cortex
🔊 a small group of indispensable persons or things
“five periodicals make up the core of their publishing program”