n., pl., -ni·a (-nē-ə), or -ni·ums.
- A cell that arises from a primordial germ cell and differentiates into an oocyte in the ovary.
- A female reproductive structure in certain thallophytes, usually a rounded cell or sac containing one or more oospheres.
[OO- + New Latin gonium, cell (from Greek gonos, seed; see gono-).]
oogonial o'o·go'ni·al (-nē-əl) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
