Definition of isogamy in US English:

isogamy

noun

Biology
  • Sexual reproduction by the fusion of similar gametes.

    Compare with anisogamy
    • ‘As isogamy is approached, sperm become less abundant, ova become relatively less rare, and competition between males for fertilization success is predicted to weaken.’

Origin

Late 19th century: from iso- ‘equal’ + Greek -gamia (from gamos ‘marriage’).

Pronunciation

isogamy

/īˈsäɡəmē//aɪˈsɑɡəmi/