直径は英語で
diameter

英語の定義

直径
1. n. (geometry) diameter
宇宙の直径は約%930%億光年だ。 - The diameter of the universe is some ninety-three billion light years.
2. n. (graph theory) diameter

diameter
1. n. (geometry) Any straight line between two points on the circumference of a circle that passes through the centre/center of the circle.
2. n. (geometry) The length of such a line.
3. n. (geometry) The maximum distance between any two points in a metric space
4. n. (graph theory) The maximum eccentricity over all vertices in a graph.