xenogenesis xenogamy • xenogenetic · · · Info · Definitions · Synonyms · Characters · · xenogenesis · · Text Latin · · Script 11 · · Length Definitions · · · (noun) the alternation of two or more different forms in the life cycle of a plant or animal. Synonyms: alternation of generations, heterogenesis. · · Noun Definition 1 Synonyms · · · alternation of generations · · Synonym 1 heterogenesis · · Synonym 2 Characters · · e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 x latin small letter x U+0078