PHOTO- Meaning of PHOTO- in English [ 'fəʊtəʊ ]■ combining form1》 relating to light: photochemical.2》 relating to photography: photofit. Originsense 1 from Gk phōs , phōt- 'light'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004