[mahy-kroh-noo-klee-uhs, -nyoo-]
noun, plural micronuclei [mahy-kroh-noo-klee-ahy, -nyoo-] . Biology.
the smaller of the two types of nuclei occurring in ciliate protozoans.
Compare macronucleus.

1890–95; micro- + nucleus

micronuclear, adjective
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World English Dictionary
micronucleus (ˌmaɪkrəʊˈnjuːklɪəs)
n , pl -clei, -cleuses
Compare macronucleus the smaller of two nuclei in ciliated protozoans, involved in reproduction

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Medical Dictionary

micronucleus mi·cro·nu·cle·us (mī'krō-nōō'klē-əs, -nyōō'-)

  1. A minute nucleus.

  2. The smaller of two nuclei in ciliate protozoans that contains genetic material and functions in reproduction.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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