phonetic symbol: / núkliəs / 

nucleus - English Dictionary

[ noun ]
■ the central structure of the lens that is surrounded by the cortex
lens nucleus

[ noun ]
■ a part of the cell containing DNA and RNA and responsible for growth and reproduction
cell nucleus , karyon

[ noun ]
■ any histologically identifiable mass of neural cell bodies in the brain or spinal cord

[ noun ]
■ a small group of indispensable persons or things
core , core group

[ noun ]
■ the positively charged dense center of an atom

[ 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

Word list en

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