photic [ foh-tik ] SHOW IPA / ˈfoʊ tɪk / PHONETIC RESPELLING EXAMPLES | WORD ORIGIN adjective of or relating to light. pertaining to the generation of light by organisms, or their excitation by means of light. Origin of photic 1835–45;
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for photic
As might well be supposed, this work with the "
photic borer," as Clewe now called his instrument, was of absorbing interest. British Dictionary definitions for photic adjective of or concerned with light biology of or relating to the production of light by organisms Also: photobathic designating the zone of the sea where photosynthesis takes place Word Origin for photic
photo- + -ic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for photic adj.
1843, "pertaining to light;" 1899, "pertaining to the parts of the ocean penetrated by sunlight," from Greek
phot-, comb. form of Greek phos "light" (related to phainein "to show, to bring to light;" see phantasm) + -ic.
Online Etymology Dictionary, © 2010 Douglas Harper
Medicine definitions for photic adj. Of or relating to light. Penetrated by or receiving light. Designating or relating to the layer of a body of water that is penetrated by sufficient sunlight for photosynthesis.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for photic Of or relating to light. Penetrated by or receiving light. Relating to the layer of a body of water that is penetrated by sufficient sunlight for photosynthesis. The depth of the photic zone is dependent on the clarity of the water and the amount and intensity of direct sunlight, although it does not usually exceed 200 m. Also called euphotic Compare aphotic.
The American Heritage® Science Dictionary
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