photoperiodism

noun pho·to·pe·ri·od·ism \-ˈpir-ē-ə-ˌdi-zəm\

Definition of PHOTOPERIODISM

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

circa 1911

Medical Dictionary

noun pho·to·pe·ri·od·ism \-ˈpir-ē-ə-ˌdiz-əm\

plural pho·to·pe·ri·od·isms also pho·to·pe·ri·od·ic·i·ties

: the response or the capacity to respond to photoperiod

pho·to·pe·ri·od·ism also pho·to·pe·ri·od·ic·i·ty \-ˌpir-ē-ə-ˈdis-ət-ē\

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