heterogenesis noun.
[hɛt(ǝ)rǝ(ʊ)'dʒɛnɪsɪs] M19.[from HETERO- + -GENESIS.]Biology.
1. The origination or birth of an organism otherwise than from a similar organism as parent.
M19.2. spec. Alternation of generations.
M19. [TahlilGaran] English Dictionary ▲