pho·​to·​pho·​bic | \ ˌfō-tə-ˈfō-bik How to pronounce photophobic (audio) \

Definition of photophobic

1a : shunning or avoiding light
b : growing best under reduced illumination
2 : of or relating to photophobia

Examples of photophobic in a Sentence

Recent Examples on the Web In the case of slime mold, which is photophobic, the presence of light will slow down the electrical activity, creating a more sluggish beat. Liz Stinson, WIRED, "Listen to Slime Mold Sing a Song," 6 Oct. 2015

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'photophobic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of photophobic

1855, in the meaning defined at sense 1a

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The first known use of photophobic was in 1855

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Cite this Entry

“Photophobic.” Dictionary, Merriam-Webster, Accessed 23 Apr. 2021.

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More Definitions for photophobic


pho·​to·​pho·​bic | \ -ˈfō-bik How to pronounce photophobic (audio) \

Medical Definition of photophobic

1 : shunning or avoiding light
2 : of or relating to photophobia

Comments on photophobic

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