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ra·di·us

radius

 
pronunciation:
reI di s
features:
Word Explorer, Word Parts
part of speech: noun
inflections: radii, radiuses
definition 1: a straight line from the center to the edge of a circle or sphere.
definition 2: a circular area measured by the length of its radius.
There are no stores within a mile radius of my house.
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  measurement, shape
Word Parts  About this feature
The word radius contains the following part:
radi Latin root that means ray, spoke
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