[ oh-uh-sfeer ]
/ ˈoʊ əˌsfɪər /

noun Biology.

an unfertilized egg within an oogonium.

Words nearby oosphere

Origin of oosphere

First recorded in 1870–75; oo- + -sphere
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for oosphere

British Dictionary definitions for oosphere

/ (ˈəʊəˌsfɪə) /


a large female gamete produced in the oogonia of algae and fungi
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

Medical definitions for oosphere

[ ōə-sfîr′ ]


A large nonmotile female gamete or egg cell, formed in an oogonium and ready for fertilization.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for oosphere

[ ōə-sfîr′ ]

A large nonmotile female gamete formed in an oogonium, such as the eggs formed in the oogonium of an oomycete.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.