Scrabble Dictionary

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Nucleus

ˈnjuːkliəs

Nucleus definitions

noun

Inflections:

nuclei nucleus

the central and most important part of an object, movement, or group, forming the basis for its activity and growth

"the nucleus of a British film-producing industry"

Synonyms:
core centre central part most important part heart nub hub middle midpoint eye kernel focus focal point pivot crux
the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass
- a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material
- a discrete mass of grey matter in the central nervous system
- the solid part of a comet's head