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Tropism - Dictionary Definition and Overview |
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Tropism : (noun)
1: an involuntary orienting response; positive or negative
reaction to a stimulus source
Based on WordNet 2.0
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Tropism : \Tro"pism\, n. [Gr. ? a turning, ? to turn _ -ism.]
(Physiol.)
Modification of the direction of growth.
Based on WordNet (r) 2.0 (August 2003)
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