- Informal. radical.
- Slang. fine; wonderful.
Origin of rad2
by shortening of radical
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for radder
I ast seberal colored men, but dey'd radder whitewash an' clean chicken coops.Tom Swift and his Motor-cycle
I'd radder take dis mutt into Fairview dan pull down a t'ousan' in de long green.Motor Matt's Red Flyer, or, On the High Gear
Stanley R. Matthews
I'd radder go to hell on my knees backward dan tech de fust drap ob dat.Si Klegg, Book 4 (of 6)
Beoples might radder haf deir landts for nuttin', dan bay rents for dem.The Redskins; or, Indian and Injin, Volume 1.
James Fenimore Cooper
- 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
C20: shortened from radiation
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
Word Origin and History for radder
Online Etymology Dictionary, © 2010 Douglas Harper
- 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.