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From The Collaborative International Dictionary of English v.0.48:
Gemmation \Gem*ma"tion\, n. [Cf. F. gemmation.] [1913 Webster] 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. [1913 Webster] 2. (Bot.) The arrangement of buds on the stalk; also, of leaves in the bud. [1913 Webster]