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nucleolus


Definition of nucleolus

noun (plural nucleoli /-lʌɪ/)

Biology
  • a small dense spherical structure in the nucleus of a cell during interphase.

Derivatives

nucleolar

adjective

Origin:

mid 19th century: from late Latin, diminutive of Latin nucleus 'inner part, kernel' (see nucleus)

nucleolus in other Oxford dictionaries

Definition of nucleolus in the US English dictionary