Definition of photochemical in English:

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Pronunciation: /fəʊtə(ʊ)ˈkɛmɪk(ə)l/


1Relating to or caused by the chemical action of light: a photochemical reaction
More example sentences
  • The small rings are made to move around the big ring by bathing them in light of different wavelengths; the light energy fuels the photochemical reaction to break the hydrogen bonds.
  • One influential school of thought focuses on the effects of oxidation reactions brought about by active oxygen species generated by photochemical reactions involving blue and UV light.
  • This is a problem for museums because photochemical oxidation is not required; the reactions take place in the dark.
1.1Relating to photochemistry.
Example sentences
  • The program emphasized photochemical approaches, although thermochemical processes were also evaluated.
  • Ever since mechanical and photochemical advances in the 19th century gave rise to the invention of motion picture recording and display, the evolution of the ‘art’ of film has been a consequence of the rate of technological change.



Example sentences
  • In the photogravure process, the image is photochemically transferred to an etching plate that has been coated with a light-sensitive emulsion.
  • In addition and parallel to drug photobleaching during PDT, native photosensitizers can be photochemically converted to new species known as ‘photoproducts’.
  • During the oxidative stress of constant ultraviolet radiation, at least one photochemically active tryptophan metabolite, N-formyl kynurenine (NF-Kyn), is formed in the lens.

Words that rhyme with photochemical

academical, agrochemical, alchemical, biochemical, chemical, petrochemical, polemical
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