Enter a clue or pattern or both:

The Clue

Geiger relative (3 letter answer)

The Answer

RAD

Tags


Notes

The answer RAD is seen frequently, appearing about once every 140 puzzles.

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Definition

RAD as a noun:

1. a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material
2. (radian, rad) = the unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)