photoperiodism

noun
pho·​to·​pe·​ri·​od·​ism | \ ˌfō-tō-ˈpir-ē-ə-ˌdi-zəm How to pronounce photoperiodism (audio) \

Definition of photoperiodism

: a plant's or animal's response or capacity to respond to photoperiod

First Known Use of photoperiodism

circa 1911, in the meaning defined above

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More Definitions for photoperiodism

photoperiodism

noun
pho·​to·​pe·​ri·​od·​ism | \ -ˈpir-ē-ə-ˌdiz-əm How to pronounce photoperiodism (audio) \
variants: also photoperiodicity \ -​ˌpir-​ē-​ə-​ˈdis-​ət-​ē How to pronounce photoperiodicity (audio) \
plural photoperiodisms also photoperiodities

Medical Definition of photoperiodism

: the response or the capacity to respond to photoperiod