1. reproduction involving the union or fusion of a male and a female gamete; [syn: sexual reproduction, amphimixis]
2. union of sperm and egg in sexual reproduction;
WordNet (r) 3.0 (2006):
amphimixis
n 1: reproduction involving the union or fusion of a male and a
female gamete [syn: sexual reproduction, amphimixis]
2: union of sperm and egg in sexual reproduction