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thermoperiodism

thermoperiodism

noun ther·mo·pe·ri·od·ism \ˌthər-mō-ˈpir-ē-ə-ˌdi-zəm\

Definition of THERMOPERIODISM

:  the sum of the responses especially of a plant to appropriately fluctuating temperatures

First Known Use of THERMOPERIODISM

circa 1937

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