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[foh-tuh-fawr, -fohr] /ˈfoʊ təˌfɔr, -ˌfoʊr/

noun, Zoology.
a luminous organ found in certain fishes and crustaceans.
(zoology) any light-producing organ in animals, esp in certain fishes


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  • Photophosphorylation

    [foh-tuh-fos-fer-uh-ley-shuh n] /ˌfoʊ təˌfɒs fər əˈleɪ ʃən/ noun, Biochemistry. 1. phosphorylation that utilizes light as a source of energy, as in the formation of ATP from ADP and phosphorus during photosynthesis.

  • Photophthalmia

    photophthalmia pho·toph·thal·mi·a (fō’tŏf-thāl’mē-ə, -ŏp-) n. An inflammatory reaction of the external parts of the eye caused by intense light, as in snow blindness.

  • Photopia

    [foh-toh-pee-uh] /foʊˈtoʊ pi ə/ noun, Ophthalmology. 1. vision in bright light (opposed to ). /fəʊˈtəʊpɪə/ noun 1. the normal adaptation of the eye to light; day vision photopia pho·to·pi·a (fō-tō’pē-ə) n. Vision in bright light, mediated by cone cells of the retina; daylight vision. Also called photopic vision. pho·to’pic (-tō’pĭk, -tŏp’ĭk) adj.

  • Photopic adaptation

    photopic adaptation n. See light adaptation.

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