noun ther·mo·period \¦thərmō+\

Definition of thermoperiod

  1. :  the period of exposure of a plant to a particular temperature; specifically :  the period characteristic of the diurnal alternation of day and night temperature when both period and temperature are at or near the optimum for the induction of various activities (as growth or flowering) — compare photoperiod


\¦thər(ˌ)mō+\ adjective

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Origin and Etymology of thermoperiod

therm- + period

Seen and Heard

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a trip made at another's expense

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