Diameter etymology in English

English word diameter comes from Ancient Greek διά, Ancient Greek μέτρον

Dictionary entry	Language	Definition
διά	Ancient Greek (grc)
μέτρον	Ancient Greek (grc)
διάμετρος	Ancient Greek (grc)
diametrus	Latin (lat)
diametre	Old French (fro)
diameter	English (en)	(geometry) Any straight line between two points on the circumference of a circle that passes through the centre/center of the circle.. (geometry) The length of such a line.. (geometry) The maximum distance between any two points in a metric space. (graph theory) The maximum eccentricity over all vertices in a graph.

Diameter etymology