thermoperiodism

/ ˌθɜːməʊˌpɪərɪəˈdɪsɪtɪ; ˌθɜːməʊˈpɪərɪədɪzəm /

noun

1. botany the response of a plant to cycles of temperature fluctuation

Derived Forms

• ˌthermoˌperiˈodic, adjective