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Definition of pronuclei - 4 dictionary results

pro⋅nu⋅cle⋅us

  [proh-noo-klee-uhs, -nyoo-]
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–noun, plural -cle⋅i  [-klee-ahy] . Cell Biology.
either of the gametic nuclei that unite in fertilization to form the nucleus of the zygote.
Origin:
1875–80; < NL; see pro- 1 , nucleus
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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pro·nu·cle·us   (prō-nōō'klē-əs, -nyōō'-)   
n.   pl. pro·nu·cle·i (-klē-ī')
The haploid nucleus of a sperm or egg before fusion of the nuclei in fertilization.
pro·nu'cle·ar adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: pro·nu·cle·us
Pronunciation: (')prO-'n(y)ü-klE-&s
Function: noun
Inflected Form: plural pro·nu·clei /-klE-"I/ also pro·nu·cle·us·es
: the haploid nucleus of a male or female gamete (as an egg orsperm) up to the time of fusion with that of another gamete in fertilization —see FEMALE PRONUCLEUS, MALE PRONUCLEUS
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

pronucleus pro·nu·cle·us (prō-n&oomacr;'klē-əs, -ny&oomacr;'-)
n.

  1. One of two nuclei undergoing fusion in karyogamy.

  2. The haploid nucleus of a sperm or egg before fusion of the nuclei in fertilization.

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