a. Bot. [f. Gr. θερμο-, THERMO- + -τροπ-ος turning + -IC: cf. HELIOTROPIC.] Turning or bending under the influence of heat; of, pertaining to, or exhibiting thermotropism.
1885. Goodale, Physiol. Bot. (1892), 394. Curvatures dependent upon temperature are called thermotropic.
