Definition of photodegrade in English:

photodegrade

verb

[NO OBJECT]
  • (of a substance or object) be decomposed by the action of light, especially sunlight.

    ‘the fiber will photodegrade in about 6 months’
    • ‘Temporary erosion control blankets (ECBs) can be constructed of both natural and synthetic fibers and nettings that will either photodegrade or biodegrade over a specified period of time.’
    • ‘Spartan herbicide does not photodegrade at the soil surface.’
    • ‘Unfortunately, I do not believe this action will stop the buildup of plastic particulates, the photodegraded bits of plastic trash that now outweigh plankton in much of the ocean.’
    • ‘The data of Table 4 show that lignin samples mixed with UV screens showed less tendency to photodegrade than similar samples in the absence of UV screens.’
    • ‘Instead they "photodegrade," a process whereby sunlight breaks them into progressively smaller pieces, all of which are still plastic polymers.’

Pronunciation:

photodegrade

/ˌfōdōdəˈɡrād/