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het·ero·gon·ic | \ ˌhet-ə-rə-ˈgän-ik 
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\Medical Definition of heterogonic
1 : of, relating to, or marked by allometry
2a : being or characterized by a course of development in which a generation of parasites is succeeded by a free-living generation
a heterogonic life cycle of a nematode worm — compare homogonic
b : relating to or being the free-living generation of a heterogonic life cycle
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