(n.) The hypothesis, or doctrine, that living beings have originated by the modification of some other previously existing forms of living matter; -- opposed to abiogenesis.

assimilation avatar basal metabolism catabolism catalysis consubstantiation displacement heterotopia metabolism metagenesis metamorphism metamorphosis metastasis metathesis metempsychosis mutant mutated form mutation permutation reincarnation sport transanimation transfiguration transfigurement transformation transformism translation translocation transmigration transmogrification transmutation transposition transubstantiation