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rad2

[rad] /ræd/
noun
1.
Informal. radical.
adjective
2.
Slang. fine; wonderful.
Origin of rad2
by shortening of radical
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for raddest

rad1

/ræd/
noun
1.
a former unit of absorbed ionizing radiation dose equivalent to an energy absorption per unit mass of 0.01 joule per kilogram of irradiated material. 1 rad is equivalent to 0.01 gray
Word Origin
C20: shortened from radiation

rad2

symbol
1.
radian
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for raddest

rad

"x-ray dose unit," 1918, shortened form of radiation (q.v.). As shortened form of radical (n.), it is attested in political slang from 1820. Teen slang sense of "extraordinary, wonderful" is from late 1970s (see radical (adj.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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raddest in Medicine

rad 1 (rād)
n.
A unit of energy absorbed from ionizing radiation, equal to 100 ergs per gram or 0.01 joule per kilogram of irradiated material.

rad 2
abbr.
radian

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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raddest in Science
rad
  (rād)   
A unit used to measure energy absorbed by a material from radiation. One rad is equal to 100 ergs per gram of material. Many scientists now measure this energy in grays rather than in rads.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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raddest in Culture

rad definition


An acronym for radiation absorbed dose. A unit of energy absorbed from ionizing radiation.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Slang definitions & phrases for raddest

rad

adjective

Extraordinary; wonderful; awesome, chill, gnarly: Want to go to this way rad party? (late 1970s+ Teenagers)

noun

A radical (1820+)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Related Abbreviations for raddest

rad

1.
radian
2.
radiation absorbed dose
3.
Slang radical (that is, excellent)

RAD

Royal Academy of Dancing
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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