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thermoperiodism

(thûrˌmō-pîrˈē-ə-dĭzˌəm) also ther·mo·pe·ri·o·dic·i·ty (-dĭsˈĭ-tē)

noun

The effect on an organism of the rhythmic fluctuation of temperature, including responses associated with thermal changes accompanying the alternation of day and night.

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thermoperiodism

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