R1A1D2I1U1S1
7 points
RADIUS is validvalid
a straight line from the center of a circle to the circumference [n RADII, RADIUSES] / to give a rounded form to [v RADIUSED, RADIUSES, RADIUSING]
(Latin) the shorter and thicker of the two arm bones [n RADII or RADIUSES] / to give a rounded form to [v -ED, -ING, -ES]