n. Biology, pl., -li (-lī').
A small, typically round granular body composed of protein and RNA in the nucleus of a cell. It is usually associated with a specific chromosomal site and involved in ribosomal RNA synthesis and the formation of ribosomes.
[New Latin, from Latin, diminutive of nucleus, kernel. See nucleus.]
nucleolar nu·cle'o·lar (-lər) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
