photodissociationPronunciation: /ˈfəʊtə(ʊ)dɪˌsəʊʃɪˈeɪʃ(ə)n/Definition of photodissociation noun [mass noun] Chemistry dissociation of a chemical compound by the action of light: ozone is produced at stratospheric levels by photodissociation of molecular oxygenphotodissociation in other Oxford dictionaries Definition of photodissociation in the US English dictionary
