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radius

英 ['reɪdɪəs]美['redɪəs]
  • n. 半径,半径范围;[解剖] 桡骨;辐射光线;有效航程
  • n. (Radius)人名;(意、印尼)拉迪乌斯;(英)雷迪厄斯;(法)拉迪于斯

英英释意


1. the length of a line segment between the center and circumference of a circle or sphere
2. a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
3. a circular region whose area is indicated by the length of its radius;
"they located it within a radius of 2 miles"
4. the outer and slightly shorter of the two bones of the human forearm
5. support consisting of a radial member of a wheel joining the hub to the rim
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