Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A unit of energy absorbed from ionizing radiation, equal to 100 ergs per gram or 0.01 joule per kilogram of irradiated material. It has been replaced as a standard scientific unit by the gray.
- abbreviation radian
- adjective Excellent; wonderful.
from The Century Dictionary.
- Afraid; frightened.
- A Middle English form of
rath . - A Middle English preterit of
ride . - An obsolete preterit of
read . - noun A radical.
- noun In photometry, a proposed unit of quantity of light equal to the amount of energy in luminous form obtained in one second from a light-flux of one lumen. The rad is of a lumen-hour.
from the GNU version of the Collaborative International Dictionary of English.
- noun a unit of measurement of the amount of ionizing radiation absorbed by an object, equal to an energy of 100 ergs per gram of irradiated material (equal to 0.01 gray).
- imp. & p. p. of
read ,rede .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective slang
Excellent , short forradical . - noun metrology A non-SI
unit ofabsorbed dose ofradiation , equal to 0.01gray . - noun Abbreviation of
radian . - noun automotive, plumbing, slang Abbreviation of
radiator .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material
- noun 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)
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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By the way, is _radix_ perhaps derived from [Sanskrit: rad] (_rad_), a tooth (from the fang-like form of roots), whence _rodere_ and possibly _radius_?
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While the word rad is completely outdated it totally applies to this cake.
Archive 2009-02-01 Melissa 2009
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While the word rad is completely outdated it totally applies to this cake.
RETRO POLKA DOT CAKE Melissa 2009
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However, I wouldn't call it rad, simply because I wouldn't call anything rad -- never have and never will use that word.
"...pour saltwater on the wounds." sovay 2010
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However, I wouldn't call it rad, simply because I wouldn't call anything rad -- never have and never will use that word.
"...pour saltwater on the wounds." sovay 2010
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September 24, 2005 17: 53 b-rad: is there a mfr radio station? and more importantly, is it online?
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But there is nothing I'd rather do than lay in my bed listening to rad music with a rad boy and talk about rad things ... and say rad alot.rad. where did the word rad come from, i know its derived from Radical, but please ... somebody fill me in.
withkerth Diary Entry withkerth 2002
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But there is nothing I'd rather do than lay in my bed listening to rad music with a rad boy and talk about rad things ... and say rad alot.rad. where did the word rad come from, i know its derived from Radical, but please ... somebody fill me in.
withkerth Diary Entry withkerth 2002
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i think it's rad that used the word rad in this post.
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The rad is a unit of absorbed radiation dose in terms of the energy actually deposited in the tissue.
Radiation units 2009
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