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phototropic

[foh-tuh-trop-ik, -troh-pik]
adjective Botany.
  1. growing toward or away from the light.
  2. taking a particular direction under the influence of light.
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Origin of phototropic

First recorded in 1895–1900; photo- + -tropic
Related formspho·to·trop·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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