radius

noun

/ˈreɪdiəs/

(plural radii

/ˈreɪdiaɪ/

)

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a straight line between the centre of a circle and any point on its outer edge; the length of this line compare diameterTopics Maths and measurementc1
a round area that covers the distance mentioned from a central point
- within a… radius They deliver to within a 5-mile radius of the store.
- Doctors wish to examine everyone living within a 10-mile radius of the factory.
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(anatomy) 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 see also ulnaTopics Bodyc2

Word Originlate 16th cent. (in sense (3)): from Latin, literally ‘staff, spoke, ray’.

单词	radius
释义	radius noun /ˈreɪdiəs/ /ˈreɪdiəs/ (plural radii /ˈreɪdiaɪ/ /ˈreɪdiaɪ/ ) jump to other results enlarge image a straight line between the centre of a circle and any point on its outer edge; the length of this line compare diameterTopics Maths and measurementc1 a round area that covers the distance mentioned from a central point within a… radius They deliver to within a 5-mile radius of the store. Doctors wish to examine everyone living within a 10-mile radius of the factory. enlarge image (anatomy) 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 see also ulnaTopics Bodyc2 Word Originlate 16th cent. (in sense (3)): from Latin, literally ‘staff, spoke, ray’.
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