n. (Biol.) A cell or organ in which gametes develop. [ WordNet 1.5 ]

n. [ Gr. gameth` wife, or game`ths husband, fr. gamei^n to marry. ] (Biol.) A sexual cell or germ cell having a single set of unpaired chromosomes; a conjugating cell which unites with another of like or unlike character to form a new individual. In Bot., gamete designates esp. the similar sex cells of the lower thallophytes which unite by conjugation, forming a zygospore. The gametes of higher plants are of two sorts, sperm (male) and egg (female); their union is called fertilization, and the resulting zygote an oospore. In Zool., gamete is most commonly used of the sexual cells of certain Protozoa, though also extended to the germ cells of higher forms. [ Webster 1913 Suppl. ]

n. (Biol.) An immature animal or plant cell that develops into a gamete by meiosis. [ WordNet 1.5 ]

n. (Biol.) A modified branch bearing gametangia as in the thalloid liverworts. [ WordNet 1.5 ]

n. [ Gamete + Gr. fyto`n plant. ] (Bot.) In the alternation of generations in plants, that generation or phase which bears sex organs and produces gametes. In the lower plants, as the algæ, the gametophyte is the conspicuous part of the plant body; in mosses it is the so-called moss plant; in ferns it is reduced to a small, early perishing body; and in seed plants it is usually microscopic or rudimentary. [ Webster 1913 Suppl. ]