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¹rad

noun \ˈrad\

Definition of RAD

: a unit of absorbed dose of ionizing radiation equal to an energy of 100 ergs per gram of irradiated material

Origin of RAD

radiation absorbed dose

First Known Use: circa 1953

Rhymes with RAD

ad, add, bad, brad, cad, chad, Chad, clad, dad, fad, gad, Gad, glad, grad, lad, mad, pad, plaid, sad, scad, shad, tad, trad

²rad

adjective

: very appealing or good

Full Definition of RAD

slang

: cool 7, radical

See rad defined for English-language learners

First Known Use of RAD

1982

³rad

abbreviation

Definition of RAD

radian

radius

radix

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Nglish: Translation of "rad" for Spanish speakers

Britannica English: Translation of "rad" for Arabic speakers

Britannica.com: Encyclopedia article about "rad"

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Next Word in the Dictionary: radarPrevious Word in the Dictionary: racy All Words Near: rad

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1rad

Definition of RAD

Origin of RAD

Rhymes with RAD

2rad

Full Definition of RAD

First Known Use of RAD

3rad

Definition of RAD

Learn More About RAD

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Seen & Heard

¹rad

²rad

³rad