diameter

n. 直徑

直經、徑

學術名詞

• 直徑：數學、化學術語、物理學、計量學、造船工程、測量學
• 節圓直徑：航空太空

英文釋義

1. the length of a straight line passing through the center of a circle and connecting two points on the circumference
2. a straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface)