Photochemistry
Pronunciation : Pho`to*chem"is*try
Part of Speech : n.
Etymology : [Photo- + chemistry.] (Chem.)
Definition : Defn: The branch of chemistry which relates to the effect of light in producing chemical changes, as in photography.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder