photopathy

[ foh-top-uh-thee ]

/ foʊˈtɒp ə θi /

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movement of an organism in response to the intensity of light, especially away from the source of light.

any condition or disease produced by the effect of light, especially in excessive amounts.

QUIZZES

Apostrophes can be tricky; prove you know the difference between it’s and its in this crafty quiz!

Question 1 of 12

On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

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

pho·to·path·ic

[foh-tuh-path-ik], /ˌfoʊ təˈpæθ ɪk/, adjective