Diameter
01
直径, 直径
a straight line from one side of a round object, particularly a circle, passing through the center and joining the other side
例
The diameter of a circle is the longest distance between any two points on its circumference, passing through the center.
円の直径は、円周上の任意の2点間の最長距離で、中心を通ります。
02
a unit of linear measurement used to express magnifying power
例
The microscope had a diameter of 100×.
語彙ツリー
diametral
diametrical
semidiameter
diameter
