[proh-noo-klee-uhs, -nyoo-]
noun, plural pronuclei [proh-noo-klee-ahy, -nyoo-] . Cell Biology.
either of the gametic nuclei that unite in fertilization to form the nucleus of the zygote.

1875–80; < Neo-Latin; see pro-1, nucleus Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To pronuclei
World English Dictionary
pronucleus (ˌprəʊˈnjuːklɪəs)
n , pl -clei
the nucleus of a mature ovum or spermatozoan before fertilization

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Medical Dictionary

pronucleus pro·nu·cle·us (prō-nōō'klē-əs, -nyōō'-)

  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.
Cite This Source
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature