Meaning of isogamous

i•sog•a•mous

Pronunciation: (ī-sog'u-mus), [key]
— adj. Biol.
  1. having two similar gametes in which no differentiation can be distinguished, or reproducing by the union of such gametes (opposed to heterogamous).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.