English Lexicon

nucleus

/ˈnjuːkliəs/
nounCEFR B2 (Upper)Top #2500 frequency
Full Thesaurus

Comprehensive Definitions & Senses

1 sense
As noun
  1. 1

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

    "This small group of volunteers formed the nucleus of the new organization."

Thesaurus & Semantic Spectrum

Synonyms (2)

Linguistic Origin & Historical Etymology

From Latin nucleus 'kernel', diminutive of nux 'nut'.

Quick Vocabulary Retention Check

Which of the following is the closest synonym for "nucleus"?

Thesaurus & Synonyms Graph

Explore Nuanced Synonyms for "nucleus"

Discover exact matches, context-specific alternatives, and antonyms with intensity ratings in the VocabDictionary Thesaurus.

View "nucleus" Synonym Map