\Gem*ma"tion\, n. [Cf. F. gemmation.] 1. (Biol.) The formation of a new individual, either animal or vegetable, by a process of budding; an asexual method of reproduction; gemmulation; gemmiparity. See {Budding}. 2. (Bot.) The arrangement of buds on the stalk; also, of leaves in the bud.