pho·​to·​pig·​ment ˈfōt-ō-ˌpig-mənt How to pronounce photopigment (audio)
: a pigment (as chlorophyll or a compound in the retina) that undergoes a physical or chemical change under the action of light

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Cite this Entry

“Photopigment.” Medical Dictionary, Merriam-Webster, Accessed 14 Jun. 2024.

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