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radiothorium
radiotoxic
radiotracer
radish
radium
radium therapy
radius
radius of action
radius of curvature
radius vector
radix
RADM
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radon
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radius of curvature
ra·di·us of cur·va·ture


noun 
Definition:
 
radius of circle matching curve: the radius of the circle whose curvature matches that of a curve at a given point
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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