heterogony
noun
het·er·og·o·ny ˌhe-tə-ˈrä-gə-nē 
1
: alternation of generations
especially : alternation of a dioecious with a parthenogenetic generation
2
: allometry
heterogonic
ˌhe-tə-rə-ˈgä-nik
adjective 
Word History
First Known Use
circa 1887, in the meaning defined at sense 1
Medical Definition
heterogony
noun
het·er·og·o·ny ˌhet-ə-ˈräg-ə-nē
plural heterogonies
1
: alternation of generations
especially : alternation of a dioecious generation with a parthenogenetic one
2
: allometry