myEtymology.com: Greek etymology of diametros

Etymology of the Greek word diametros (διάμετρος)

the Greek word diametros, διάμετρος

derived from the Greek word dia, διά (through, between)

derived from the Greek word metron, μέτρον (measure; a measure ('metre'), literally or figuratively; by implication, a limited portion (degree))

derived from the Proto-Indo-European root *me-

derived from the Proto-Indo-European root *mē-