alternation of generations alternation • alternationist · · · Info · Definitions · Synonyms · Characters · · alternation of generations · · Text Common · · Latin · · Scripts 26 · · Length 9 · · Syllables Definitions · · · (noun) the alternation of two or more different forms in the life cycle of a plant or animal. Synonyms: alternation of generations, heterogenesis, xenogenesis. · · Noun Definition 1 Synonyms · · · heterogenesis · · Synonym 1 xenogenesis · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074