photomovement

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-
Proto-Indo-European *m(y)ewh₁-der.
Proto-Italic *moweō
Latin movēre
Old French movoir
Proto-Indo-European *-mn̥
Proto-Indo-European *-mn̥tom
Proto-Italic *-mentom
Latin -mentum
Old French -ment
Old French movementbor.
Middle English mevement
English movement
English photomovement
From photo- + movement.