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tropism: Meaning and Definition of

tro•pism

Pronunciation: (trō'piz-um), [key]
— n. Biol.
  1. an orientation of an organism to an external stimulus, as light, esp. by growth rather than by movement.

-tropism

Pronunciation: [key]
  1. var. of
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
tropine tropo-
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