Etymology of the Latin word perimetros
the Latin word perimetros (perimeter; circumference)
derived from the Greek word perimetros, περίμετρος
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-
using the Greek prefix peri-, περι-