[oh-uh-gam-eet, -guh-meet]

noun Cell Biology.

one of a pair of structurally dissimilar gametes, the female gamete being large and nonmotile and the male gamete being small and motile.

Origin of oogamete

First recorded in 1890–95; oo- + gamete
Related formso·og·a·mous [oh-og-uh-muh s] /oʊˈɒg ə məs/, adjectiveo·og·a·my, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for oogamous




Characterized by or having small motile male gametes and large nonmotile female gametes.


[ō′ə-gămēt′, -gə-mēt]


A female gamete, especially the larger of two gametes produced by an oogamous species.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for oogamous



A system of sexual reproduction in which one gamete (called the egg) is large and nonmotile, while the other (called the sperm) is small and motile. Oogamy is a type of heterogamy. Compare isogamy.
Related formsoogamous adjective
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.