Dictionary

alternation of generations

Definition of ALTERNATION OF GENERATIONS

:  the occurrence of two or more forms differently produced in the life cycle of a plant or animal usually involving the regular alternation of a sexual with an asexual generation

First Known Use of ALTERNATION OF GENERATIONS

1813

alternation of generations

noun al·ter·na·tion of generations \ˌl-tər-ˈnā-shən also ˌal-\   (Medical Dictionary)

Medical Definition of ALTERNATION OF GENERATIONS

:  the occurrence of two or more forms differently produced in the life cycle of a plant or animal usually involving the regular alternation of a sexual with an asexual generation but not infrequently consisting of alternation of a dioecious generation with one or more parthenogenetic generations

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