Word Study
thermotropism
CIDE DICTIONARY
thermotropism, n. [Thermo- + Gr. to turn.].
The phenomenon of turning towards a source of warmth, seen in the growing parts of some plants. [1913 Webster]
OXFORD DICTIONARY
thermotropism, n. the growing or bending of a plant towards or away from a source of heat.
Derivative
thermotropic adj.
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