photodissociation

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pho•to•dis•so•ci•a•tion

(ˌfoʊ toʊ dɪˌsoʊ siˈeɪ ʃən, -ʃi-)

n.
the dissociation of a chemical compound by radiant energy.
[1920–25]
References in periodicals archive ?
From their radiation-excited state, the photoinitiators photolyze or degrade directly or indirectly into free radicals.
It was shown that undecanone, which photolyzes rapidly in methanol solution, does not photolyze in NS-CAL aqueous solution.
Lower ambient outdoor HONO levels are expected because HONO photolyzes fairly quickly outdoors.