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English word diameter comes from Ancient Greek διά, Ancient Greek μέτρον
διά (Ancient Greek)
μέτρον (Ancient Greek)
διάμετρος (Ancient Greek)
diametrus (Latin)
diametre (Old French)
diameter (English)
(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.