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。
To calculate the circumference of a circle, you need to know its diameter and use the formula π × diameter.
円の円周を計算するには、その直径を知り、式 π × 直径を使用する必要があります。
02
a unit of linear measurement used to express magnifying power
例
The microscope had a diameter of 100×.
Telescopes are often rated in diameters.
語彙ツリー
diametral
diametrical
semidiameter
diameter
