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photopathy

[ foh-top-uh-thee ]

noun

  1. movement of an organism in response to the intensity of light, especially away from the source of light.
  2. any condition or disease produced by the effect of light, especially in excessive amounts.


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Other Words From

  • pho·to·path·ic [foh-t, uh, -, path, -ik], adjective
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Word History and Origins

Origin of photopathy1

First recorded in 1895–1900; photo- + -pathy

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photooxidationphotoperiod