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nucleus

noun

1 nucleus

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

synonyms: cell nucleus, karyon.

Roget 153: cause, origin, source, principle, element; occasioner, prime mover, primum mobile [Lat.]; vera causa [Lat.]; author etc. (producer) 164; mainspring; ... show more

Roget 68: middle, midst, mediety, mean etc. 29; medium, middle term; center etc. 222, mid-course etc. 628; ... show more

Dutch: celkern, kern, nucleus
Polish: nukleus, jądro, jądro komórkowe



2 nucleus

The positively charged dense center of an atom.

Dutch: atoomkern, kern, kerndeeltje, kiem, nucleus
Polish: jądro, jądro atomowe

3 nucleus

A small group of indispensable persons or things.

synonyms: core, core group.

Roget 222: centrality, centricalness, center; middle etc. 68; focus etc. 74.    core, kernel; nucleus, nucleolus; ... show more

Roget 642: importance, consequence, moment, prominence, consideration, mark, materialness.    import, significance, concern; emphasis, interest.    greatness etc. ... show more

4 nucleus

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.

Polish: jądro

5 nucleus

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

6 nucleus

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

synonym: lens nucleus.


Moby thesaurus: Anlage, Kern, NMR, alpha particle, antibaryon, antilepton, antimeson, atomic nucleus, atomic particle, axiom, axis, baryon, basichromatin, beta particle, bud, center, center of action, center of gravity, centroid, centrum ... show more.

Find more on nucleus elsewhere: etymology - rhymes - Wikipedia.

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