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Chemical decomposition induced by light or other radiant energy.

pho′to·lyt′ic (fō′tə-lĭt′ĭk) adj.
pho′to·lyt′i·cal·ly adv.


(Chemistry) chemical decomposition caused by light or other electromagnetic radiation. Compare radiolysis
photolytic adj


(foʊˈtɒl ə sɪs)

the chemical decomposition of materials under the influence of light.
pho•to•lyt•ic (ˌfoʊt lˈɪt ɪk) adj.


the breakdown of matter or materials under the influence of light. — photolytic, adj.
See also: Decaying
the breakdown of matter or materials under the influence of light. — photolytic, adj.
See also: Light


The decomposition or disassociation of a compound when exposed to light of a certain wavelength.
References in periodicals archive ?
The Vernier Flash Photolysis Spectrometer, Pressure Sensor 400, and Platinum-Cell Conductivity Probe offer instructors and students greater versatility
EPA found that "Once volatilized, iodomethane degrades rapidly in the lower atmosphere via direct photolysis and lasts in the atmosphere less than 12 days, as compared with two years for methyl bromide.
Photolysis has provided a way to study kinetics of ligand activated signaling in situ at inaccessible intracellular and extracellular receptors for three decades.
Photolysis of amdro fire ant insecticide active ingredient hydromethylnon (Ac 217,300) in distilled water.
DDT can naturally break down into DDE [1,1-bis-(4-chlorophenyl)-2,2-dichloroethene] and DDD [1,1-dichloro-2,2-bis(p-chlorophenyl)ethane] through photolysis and microbial biodegradation [Agency for Toxic Substances and Disease Registry (ATSDR) 2002].
Degradation of acetic acid with sulfate radical generated by persulfate ions photolysis.
However, in the presence of solutes (organic compounds), primary and secondary molecular, ionic, or radical species produced in GDEP can attack these molecules and cause their degradation [33], Alternatively, solutes can be degraded indirectly through pyrolysis, radiolysis, or photolysis produced by GDEP [33, 34], But in the initiated polymerization process by GDEP, we should try to restrain the oxidizing properties.
The photolysis of hydrogen peroxide at high light intensities, Transactions of the Faraday Society 53: 344-356.
The possible reaction mechanisms of the chain reactions of the photolysis of [O.
Ford, Flash Photolysis of Ru3(CO)i2: Evidence for Intermediates in the Competing Fragmentation and Ligand-Substitution Photoreactions, J.
Comparative degradation kinetics of alachlor in water by photocatalysis with FeCl3, TiO2 and photolysis, studied by solid phase disk extraction followed by gas chromatographic techniques.
Electrochemical photolysis of water at a semiconductor electrode.