[foh-toh-di-grey-duh-buh l] /ˌfoʊ toʊ dɪˈgreɪ də bəl/

(of a substance) capable of being broken down by light.
(of plastic) capable of being decomposed by prolonged exposure to light

photodegradable pho·to·de·grad·a·ble (fō’tō-dĭ-grā’də-bəl)
Capable of being chemically broken down by light.
Capable of decomposing when exposed to light. Photodegradable plastic, for example, becomes brittle and breaks into smaller pieces when exposed to sunlight, helping reduce litter and environmental damage.


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