pho·to·de·com·po·si·tion noun \-ˌdē-ˌkäm-pə-ˈzi-shən\
First Known Use of PHOTODECOMPOSITION
pho·to·de·com·po·si·tion noun \-ˌdē-ˌkäm-pə-ˈzish-ən\ (Medical Dictionary)
: chemical breaking down (as of a pesticide) by means of radiant energy
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