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tropism |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Tropism \Tro"pism\, n. [Gr. ? a turning, ? to turn + -ism.] (Physiol.) Modification of the direction of growth. From WordNet r 1.6 [wn]: tropism n : an involuntary orienting response; positive or negative reaction to a stimulus source
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