NUCLEUS


Meaning of NUCLEUS in English

[ 'nju:klɪəs ]

■ noun ( plural nuclei -lɪʌɪ )

1》 the central and most important part of an object or group.

2》 Physics the positively charged central core of an atom, containing nearly all its mass.

3》 Biology a structure present in most cells, containing the genetic material.

4》 a discrete mass of grey matter in the central nervous system.

Origin

C18: from L., lit. 'kernel, inner part', dimin. of nux , nuc- 'nut'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.