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isogamous

American  
[ahy-sog-uh-muhs] / aɪˈsɒg ə məs /

adjective

Biology.
  1. having two similar gametes in which no differentiation can be distinguished, or reproducing by the union of such gametes (heterogamous ).


Etymology

Origin of isogamous

First recorded in 1885–90; iso- + -gamous