the branch of chemistry that deals with the chemical action of light.
Related formspho·to·chem·i·cal [foh-toh-kem-i-kuh l] /ˌfoʊ toʊˈkɛm ɪ kəl/, pho·to·chem·ic, adjectivepho·to·chem·i·cal·ly, adverbpho·to·chem·ist, noun
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for photochemical
Historical Examples of photochemical
Scheele's work aroused much interest in photochemical effects and many investigations followed.
The foregoing are only a few of the multitude of photochemical reactions and other effects of radiant energy.
We must therefore conclude that the heliotropic curvature of the polyps is determined by a photochemical action of the light.
The product of photochemical decomposition no longer forms azo-colours with amines or phenols.
British Dictionary definitions for photochemical
Derived Formsphotochemically, adverb
of or relating to photochemistry; involving the chemical effects of light
Derived Formsphotochemist, noun
the branch of chemistry concerned with the chemical effects of light and other electromagnetic radiationsAlso called: actinochemistry
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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photochemical in Medicine
Related formspho′to•chem′i•cal (-ĭ-kəl) adj.
The branch of chemistry that deals with the effects of light on chemical systems.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
The scientific study of the effects of light and ultraviolet radiation on chemical reactions.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.