n., pl., -cle·i (-klē-ī'), or -cle·us·es.
The smaller of two nuclei in ciliate protozoans that contains genetic material and functions in reproduction.
micronuclear mi'cro·nu'cle·ar 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.