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also bio-genesis, 1870, "theory that living organisms arise only from pre-existing living matter," coined by English biologist T.H. Huxley (1825-1895) from Greek bios "life" (see bio-) + genesis (q.v.). Related: Biogenetic; biogenetical.
biogenesis bi·o·gen·e·sis (bī'ō-jěn'ĭ-sĭs)n.
The principle that life originates from preexisting life and not from nonliving material.