nucleolus

noun
nu·​cle·​o·​lus | \ nü-ˈklē-ə-ləs How to pronounce nucleolus (audio) , nyü-\
plural nucleoli\ nü-​ˈklē-​ə-​ˌlī How to pronounce nucleoli (audio) , nyü-​ \

Definition of nucleolus

: a spherical body of the nucleus of most eukaryotes that becomes enlarged during protein synthesis, is associated with a nucleolus organizer, and contains the DNA templates for ribosomal RNA — see cell illustration

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Other Words from nucleolus

nucleolar \ nü-​ˈklē-​ə-​lər How to pronounce nucleolar (audio) , nyü-​ \ adjective

Examples of nucleolus in a Sentence

Recent Examples on the Web

More membraneless structures continued to be found, such as the nucleolus, a dense structure in the cell nucleus. Quanta Magazine, "‘Lava-Lamp’ Proteins May Help Cells Cheat Death," 26 Nov. 2018 But there’s more to the nucleolus than just making ribosomes. Joanna Klein, New York Times, "The Thing Inside Your Cells That Might Determine How Long You Live," 20 May 2018

First Known Use of nucleolus

1839, in the meaning defined above

History and Etymology for nucleolus

New Latin, from Latin, diminutive of nucleus

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More Definitions for nucleolus

nucleolus

noun
nu·​cle·​o·​lus | \ n(y)ü-ˈklē-ə-ləs How to pronounce nucleolus (audio) \
plural nucleoli\ -​ˌlī How to pronounce nucleoli (audio) \

Medical Definition of nucleolus

: a spherical body of the nucleus of most eukaryotes that becomes enlarged during protein synthesis, is associated with a nucleolus organizer, and contains the DNA templates for ribosomal RNA

called also plasmosome