The Clue
The "r" of "pi r squared" (6 letter answer)
The Answer
RADIUS
Tags
Notes
The answer RADIUS is rarely seen, appearing only about once every 2400 puzzles.
Related Clues
Forearm bone
Half a diameter
Range of operation
Distance on a radar screen
Figure that's squared in a common formula
Definition
RADIUS as a noun:
1. (radius, r) = the length of a line segment between the center and circumference of a circle or sphere
2. a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
3. a circular region whose area is indicated by the length of its radius; "they located it within a radius of 2 miles"
4. the outer and slightly shorter of the two bones of the human forearm
5. (spoke, wheel spoke, radius) = support consisting of a radial member of a wheel joining the hub to the rim