Dictionary

nucleolus

noun nu·cle·o·lus \nü-ˈklē-ə-ləs, nyü-\
plural nu·cle·o·li\-ˌlī\

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
nu·cle·o·lar \-lər\ adjective

Origin of NUCLEOLUS

New Latin, from Latin, diminutive of nucleus
First Known Use: 1845

nucleolus

noun nu·cle·o·lus \n(y)ü-ˈklē-ə-ləs\   (Medical Dictionary)
plural nu·cle·o·li \-ˌlī\

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

Illustration of NUCLEOLUS

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