noun, plural o·o·go·ni·a [oh-uh-goh-nee-uh] /ˌoʊ əˈgoʊ ni ə/, o·o·go·ni·ums. Biology.
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
Related formso·o·go·ni·al, adjective
From New Latin,
dating back to 1865–70;
see origin at oo-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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Historical Examples of oogonium
British Dictionary definitions for oogonium
noun plural -nia (-nɪə) or -niums
Derived Formsoogonial, adjective
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
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n. pl. o•o•go•ni•ums
Related formso′o•go′ni•al (-nē-əl) adj.
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.
Plural oogonia oogoniums
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.