OOGONIUM
- a female sexual organ in algae and fungi [n OOGONIUMS or OOGONIA]
- a female sexual organ in certain algae and fungi [n OOGONIA, OOGONIUMS] : OOGONIAL [adj]
- 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