a straight line from the centre to the circumference of a circle or sphere 半径 ■a radial line from the focus to any point of a curve 辐射距离 ■the length of the radius of a circle or sphere 半径距离 ■a specified distance from a centre in all directions (指明的)半径范围 there are plenty of local pubs within a two-mile radius. 在两英里范围内有许多本地酒馆。
(Anatomy)the thicker and shorter of the two bones in the human forearm (剖)桡骨。 比较ulna ■(Zoology)the corresponding bone in a vertebrate's foreleg or a bird's wing (动)(脊椎动物前肢或鸟翅的)桡骨 ■(Zoology)(in an echinoderm or coelenterate) any of the primary axes of radial symmetry (动)(棘皮动物或腔肠动物的)辐射对称轴 ■(Entomology)any of the main veins in an insect's wing (昆)径脉
(radiused, radiusing)
[with obj.][often as adj. radiused]give a rounded form to (a corner or edge) 使(角,边缘)成弧形
语源
late 16th cent. (in sense 2): from Latin, literally staff, spoke, ray'