A cooler way of saying somthing is awesome. Coming from snowboard and skate roots.
generikal.com is so ill its rad!
by generikal.com April 27, 2003
awesome,wonderful but could be risky
(After a motorbike ride) That was so rad!
by gaur August 16, 2012
n: a unit of measurement used to describe a dose of radiation. A single rad is equivalent to 100 ergs per gram or 0.01 joules per kilogram of irradiated substance.
The Federally-defined maximum occupational radiation dose is 5 rads per year.
by Ten Second Tom September 29, 2005
Another way to say "high"
Phil- Hey bill, did I tell you about the party last night?

Bill- Phil, I was AT that party last night

Phil- Well fuck... I was really fucking rad last night...

Bill- yeah.... you were Phil...
by Charlietoes August 22, 2009
1. (n) Friends =O
2. (adj) To be exceedingly cool.
OMG DUDE!your friends are frikken rad!

HAHA That Erin Kid Is RAD!
by KAYLEEEEEEEEENN January 11, 2008
abbreviation of radiator.
the rad isn't working! i'm fecking freezing.
by kellykellyrob April 14, 2007
A word that gained popular usage in the 1980s. It is an abbreviation or "radical," and is a synonym or cool and/or stellar. Synonymous with surf bums and teens who think they are still in the 1980s.
Surf bum: Duuude, I just got tubed in the most righteous wave today!
Valley girl with big blonde hair and spandex: Like, ohmygod, that is SO rad!
by Sir Joshizzle July 14, 2006

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