rad

Clipping of radical (“excellent”).

Adjective

  1. Clipping of radical (“excellent”).
    • In the Guinness Book of World-fucking-Records, man… under "Raddest Fucking Dude Alive"! - 2002, Brent Goldberg, David Wagner, Van Wilder (motion picture), spoken by Wasted Guy (Aaron Paul):
    • What is up, girly-friend? Holy shit, cuz. This is such a rad surprise. - 2011, Diablo Cody, Young Adult (motion picture), spoken by Wheelchair Mike (John Forest):

    Synonyms: amazing astounding awe-inspiring awesome awful sensational awesomesauce based beatific bewildering blissful celestial cool delightful divine dope enchanting excellent extraordinary far out fire heavenlike heavenly hellagood

Forms

radder raddest

Derived

k-rad Radelaide radness

Noun

  1. A non-SI unit of absorbed dose of radiation, equal to 0.01 gray, that is, 1 centigray.
    • Near-synonyms: centigray, cGy (same physical quantity)

    Synonyms: centigray mul:cGy

    Coordinate Terms: gray Gy

    Related: rd

  2. Symbol for the radian, a unit of measure for angle.
  3. Clipping of radiator.
  4. Abbreviation of sight radius.
  5. Clipping of radical: a political radical.
    • The women who work in it with me are all feminists, they're all rads, two of them are black belts in karate...I mean, they're major women. - 1991 April 19, Penny Arcade, “The Real Thing”, in Gay Community News, page 8:

Forms

rads

Related

deg grad mil

Derived

gigarad kilorad megarad microrad millirad rad-hard