- one of the undifferentiated germ cells giving rise to oocytes.
- the one-celled female reproductive organ in certain thallophytes, usually a more or less spherical sac containing one or more eggs.
Origin of oogonium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for oogonium
It is seldom that more than one antheridium applies itself to an oogonium.Fungi: Their Nature and Uses
Mordecai Cubitt Cooke
Mycelium present, antheridia with antherozoids, oogonium with single oosphere: Monoblepharidaceae.
Oogonium with the central uninucleate oosphere and the fertilizing tube (a) of the antheridium which introduces the male nucleus.
- an immature female germ cell forming oocytes by repeated divisions
- a female sex organ of some algae and fungi producing female gametes (oospheres)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- The primitive egg mother cell from which the oocytes develop.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A female reproductive structure in certain algae and fungi. It is usually a rounded cell or sac containing one or more oospheres.
- A cell that arises from a primordial germ cell and differentiates into an oocyte in the ovary of female animals.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.