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The Collaborative International Dictionary
Nucleole

Nucleole \Nu"cle*ole\, n. [See Nucleolus.] The nucleus within a nucleus; nucleolus.

Wiktionary
nucleole

n. (alternative form of nucleolus English)

WordNet
nucleole

n. a small round body of protein in a cell nucleus; nucleoli contain RNA and are involved in protein synthesis [syn: nucleolus]