Home › Words › P › photodegradephotodegradephotodegrade means to decompose as a result of exposure to light, especially that of the sun.EtymologyFrom photo- + degrade.verbto decompose as a result of exposure to light, especially that of the sun.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.photodecompose 82% match — To decompose by a photochemical process. vs photodegrade →photodegradative 79% match — Causing or relating to photodegradation. vs photodegrade →photodegradation 79% match — Any reduction or degradation in a useful property of a material because of a chemical change as a result of absorption of light. vs photodegrade →photodegradable 77% match — Capable of being chemically broken down as the result of a photochemical reaction vs photodegrade →photodecomposition 73% match — Any photochemical reaction that results in the decomposition of a substance vs photodegrade →photodecolouration 65% match — photochemical decolouration vs photodegrade →biodegrade 64% match — To decompose as a result of biological action, especially by microorganisms. vs photodegrade →photodepolarize 62% match — To cause or to undergo photodepolarization. vs photodegrade →