WordReference Random House Unabridged Dictionary of American English © 2017
an•i•sog•a•mous  (an′ī sogə məs),USA pronunciation adj. [Biol.]
  1. Developmental Biologyreproducing by the fusion of dissimilar gametes or individuals, usually differing in size.
Also,  an•i•so•gam•ic  (an ī′sə gamik, an′ī-).USA pronunciation 
  • aniso- + -gamous 1900–05

'anisogamous' also found in these entries:

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