2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Nucleolus \Nu*cle"o*lus\, n.; pl {Nucleoli}. [L., a little nut,
dim. of nucleus.]
1. A little nucleus.
2. (Biol.) A small rounded body contained in the nucleus of a
cell or a protozoan.
Note: It was termed by Agassiz the entoblast. In the
protozoa, where it may be situated on one side of the
nucleus, it is sometimes called the endoplastule, and
is supposed to be concerned in the male part of the
reproductive process. See {Nucleus}.
From WordNet r 1.6 [wn]:
nucleolus
n : a small round body of protein in a cell nucleus; nucleoli
contain RNA and are involved in protein synthesis [syn: {nucleole}]
more about nucleolus
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