{ Phy`lo*gen"e*sis (?), Phy*log"e*ny (?), } n. [Gr. &?; tribe + E. genesis, or root of Gr. &?; to be born.] The history of genealogical development; the race history of an animal or vegetable type; the historic exolution of the phylon or tribe, in distinction from ontogeny, or the development of the individual organism, and from biogenesis, or life development generally.