oogamy

noun Cell Biology.

1. one of a pair of structurally dissimilar gametes, the female gamete being large and nonmotile and the male gamete being small and motile.

noun

1. sexual reproduction involving a small motile male gamete and a large much less motile female gamete: occurs in all higher animals and some plants

n.

1. A female gamete, especially the larger of two gametes produced by an oogamous species.

1. A system of sexual reproduction in which one gamete (called the egg) is large and nonmotile, while the other (called the sperm) is small and motile. Oogamy is a type of heterogamy. Compare isogamy.