n. (Bot.) A nonmotile gamete, found in certain lower algæ. [ Webster 1913 Suppl. ]

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. [ Mega- + -meter: cf. F. mégamètre. ] (Physics) 1. An instrument for determining longitude by observation of the stars. [ 1913 Webster ]

2. A micrometer. [ R. & Obs. ] Knight. [ 1913 Webster ]

{ } n. [ Mega- + meter, metre, n., 2. ] In the metric system, one million meters, or one thousand kilometers. [ 1913 Webster ]

n. [ Gr. &unr_; wandering + E. gamete. ] (Bot.) One of the motile ciliated gametes, or zoogametes, found in isogamous plants, as many green algæ (Chlorophyceæ). [ Webster 1913 Suppl. ]