photodevice

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-
Latin dis-
Proto-Indo-European *dwóh₁
Proto-Indo-European *dwi-
Proto-Indo-European *dʰeh₁-
Proto-Indo-European *h₁weydʰh₁-der.
Proto-Italic *wiðō
Latin *vidō
Latin dīvidō
Latin dīvīsus
Old French devisbor.
Middle English devis
English device
English photodevice
From photo- + device.