- The definition of metagenesis is the reproduction cycle of an organism that alternates between sexual and asexual generations.
An example of metagenesis is the reproduction cycle of a cnidarian.
Biol. reproduction in which there is alternation of an asexual with a sexual generation, as in many cnidarians
Origin of metagenesisModL: see meta- and amp; -genesis
Alternation of generations between sexual and asexual forms.