Meaning of oogonium

o•o•go•ni•um

Pronunciation: (ō"u-gō'nē-um), [key]
— pl. -ni•a -ni•ums.
  1. one of the undifferentiated germ cells giving rise to oocytes.
  2. the one-celled female reproductive organ in certain thallophytes, usually a more or less spherical sac containing one or more eggs.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.