Etymology
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biogeny (n.)

1870, "science or doctrine of biogenesis; history of organic evolution;" see bio- + -geny. As "history of the evolution of organisms, genesis or evolution of matter manifesting life (including ontogeny and phylogeny)," 1879.

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biogenetic (adj.)

"pertaining to biogeny and to the rule that the individual recapitulates the growth stages of the species;" 1879; see biogeny + -ic.

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biogenic (adj.)

1864, "produced by living organisms," from bio- + -genic "produced by." From 1904 with reference to Haeckel's recapitulation theory, from biogeny + -ic.

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biogenesis (n.)

also bio-genesis, 1870, "theory that living organisms arise only from the agency of pre-existing living organisms" (as opposed to spontaneous generation), coined by English biologist T.H. Huxley from Greek bios "life" (from PIE root *gwei- "to live") + -genesis "birth, origin, creation." A word from the Darwin debates. The meaning "the theoretical evolution of living matter from complex inanimate chemicals" is from 1960. Compare also biogeny. Related: Biogenic; biogenetic; biogenetical.

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