Library / English Dictionary

RAD

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

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)

Synonyms:

rad; radian

Classified under:

Nouns denoting quantities and units of measure

Hypernyms ("rad" is a kind of...):

angular unit (a unit of measurement for angles)

Meronyms (parts of "rad"):

milliradian (a unit of angular distance equal to one thousandth of a radian)

Sense 2

Meaning:

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

Classified under:

Nouns denoting quantities and units of measure

Hypernyms ("rad" is a kind of...):

radioactivity unit (a measure of radioactivity)

Credits