Apedia

Radius Distance ˈreɪdiəs Point Centre Radii ˈreɪdiaɪ Noun

This flashcard defines "radius" as a noun with three meanings: the distance from the center to the edge of a circle (or the line representing it), a circular area around a point, and a bone in the forearm. It provides examples for the geometric and area-related definitions, and notes the plural form "radii."

This flashcard defines "radius" as a noun with three meanings: the distance from the center to the edge of a circle (or the line representing it), a circular area around a point, and a bone in the forearm. It provides examples for the geometric and area-related definitions, and notes the plural form "radii."

word radius
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Collins
radius ★☆☆☆☆
/re͟ɪdiaɪ/
1
[N-SING 单数名词]半径范围;半径距离 The radius around a particular point is the distance from it in any direction.
  [with supp]
  • Nigel has searched for work in a ten-mile radius around his home.

    奈杰尔一直在他家周围10英里的范围内找工作。

2
[N-COUNT 可数名词]半径 The radius of a circle is the distance from its centre to its outside edge.
  • He indicated a semicircle with a radius of about thirty miles.

    他标示出了一个半径大约为30英里的半圆形。


Oxford ra·dius / ˈreɪdiəs ; NAmE ˈreɪdiəs / noun _circles_comp.jpg _circles1.jpg ( plural radii / ˈreɪdiaɪ ; NAmE ˈreɪdiaɪ / ) 1 a straight line between the centre of a circle and any point on its outer edge; the length of this line 半径(长度) ☞compare
diameter
 (1 )
2 a round area that covers the distance mentioned from a central point 半径范围;周围 ◆ They deliver to within a 5-mile radius of the store. 他们对距离店铺 5 英里的范围内送货上门。 3 ( anatomy 解 ) the shorter bone of the two bones in the lower part of the arm between the elbow and the wrist, on the same side as the thumb 桡骨 ☞see also
ulna
radius radii
ra·dius / ˈreɪdiəs ; NAmE ˈreɪdiəs / radii / ˈreɪdiaɪ ; NAmE ˈreɪdiaɪ /
LDC
radiusra‧di‧us /ˈreɪdiəs/ ●○○ noun (plural radii /-diaɪ/) [countable]
Word Origin
Examples
word sets
Collocations
1the distance from the centre to the edge of a circle, or a line drawn from the centre to the edge → diameter2an area that covers a particular distance in all directions from a central point:  The shock of the explosion was felt over a radius of forty miles.within a 10-mile/200-metre etc radius There are more than a dozen golf courses within a 15-mile radius of St Andrews.3technical the outer bone of the lower part of your arm
WDF

radius

[ˈreɪdiəs]

CET4CET6TEM4考研GREIELTS
n9620
1816
123
278
549
265
601
NOUN5578
155835

Spoken:

48344997
半径(81%),桡骨(15%),半径范围(3%),辐射区(1%)
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

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