English dictionary

rad

/r/&/d/

Definitions, examples, synonyms and antonyms from WordNet 3.0.

noun

a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material

noun.quantity

Source: WordNet 3.0
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)

noun.quantity

Synonyms radian

Source: WordNet 3.0