myEtymology.com: Greek etymology of heliotropion

Etymology of the Greek word heliotropion (ἡλιοτρόπιον)

the Greek word heliotropion, ἡλιοτρόπιον

derived from the Greek word helios, ἥλιος (the sun; by implication, light)

derived from the Proto-Indo-European root *sāwel- (to shine)