photo-

prefix

Etymology: Etymology tree Proto-Indo-European *bʰeh₂- Proto-Indo-European *bʰéh₂os Proto-Hellenic *pʰáwos Ancient Greek φᾰ́ος (phắos) Ancient Greek φῶς (phôs) Ancient Greek φωτο- (phōto-)der. English photo- From Ancient Greek φωτο- (phōto-), the combining form of φῶς (phôs, “light”).

1. light, electromagnetic radiation
2. photography