botany a nastic movement in response to a temperature change, as occurs in the opening of certain flowers
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How to use thermonasty in a sentence
I shall presently describe the effects of both positive and negative thermonasty, in diurnal movements of flowers.
I shall for convenience distinguish the differential growth under temperature variation as thermonasty proper.
Further tests will be given later, to distinguish the phenomenon of thermonasty from that of Thermo-geotropism.
Two different classes of phenomena arise from variation of temperature—thermonasty and Thermo-geotropism.