n.
Pronunciation: f ō - ' tä-l ə -s ə s
Function: noun
Etymology: New Latin
Date: 1911
: chemical decomposition by the action of radiant energy (as light)
– pho · to · lyt · ic \ ˌ f ō -t ə - ' li-tik \ adjective
– pho · to · lyt · i · cal · ly \ -ti-k( ə -)l ē \ adverb