A political radical.
- ‘Like many university students in those early days of the Whitlam government, I saw myself as a bit of a rad.’
Early 19th century abbreviation.
A unit of absorbed dose of ionizing radiation, corresponding to the absorption of 0.01 joule per kilogram of absorbing material.‘The dose equivalent in rems is numerically equal to the absorbed dose in rads multiplied by the quality factor, which, for most medical radiation, is one.’
- ‘The radiation dosage was 5000 rads, similar to what has been used for other domestic species.’
- ‘For example, ordinary first responders are instructed not to enter an affected area to save someone's life if they would accumulate a dose of 25 rads of radiation.’
- ‘The LD50 dose for humans is ~ 400 rads, so we may infer that the environment of Amalthea is such that an unshielded human would receive a fatal amount of ionizing radiation in a matter of seconds.’
- ‘Ten rads per hour is several orders of magnitude more than a nuclear warhead would emit.’
Early 20th century acronym from radiation absorbed dose.
adjectiveinformal North American
excellent, wonderful, marvellous, magnificent, superb, splendid, glorious, sublime, lovely, delightful, first-class, first-rate, outstanding
- ‘his style is so rad’
- ‘a really rad game’
- ‘The video was all over the internet, too, and was equally rad.’
- ‘I feel incredibly lucky to be in such a rad work environment with a most excellent group of people.’
- ‘I've skated with a lot of pro skaters and come across lots of rad style, but the best style I've ever witness in my life was this guy, I think his name was Ryan.’
- ‘I remember how I'd sit in class back in grade school, drawing rad pictures of the Grim Reaper sweeping down and stealing the souls of all he touched.’
- ‘We started to think the way we did when we were in high school about how rad it would be to be in a touring band.’
- ‘We would be super hyped, if we could find a rad label to distribute and promote our music.’
- ‘Issue 20 brings you tons of rad photos and articles.’
- ‘I'm standing in the garage of a supercool geek guy who is building an obscure, rad, retro sportscar.’
- ‘Go look for yourself at the site were you can download a sample trailer, with some rad action from the world cups.’
- ‘What's with that rad Marc Jacobs shirt, with the scribbly skulls and slept-in appearance?’
- ‘But that's okay, if I only get onto the Quebec team that will be pretty rad too.’
- ‘When I stop bouncing, I think to myself, ‘Wow, that was rad.’’
- ‘You have a rad apartment in Manhattan where space is a privilege, not a right.’
- ‘I've only heard the first side, but it's pretty rad.’
- ‘We hang together, go to the same school and think rock 'n' roll is rad.’
- ‘Hey kids, looking for something rad to do this winter that doesn't cost a lot of money?’
- ‘He told me it was rad and that a friend of his snagged him one before it came out.’
- ‘And get ready to carve ice, to rock the terrain and be, like, totally rad.’
- ‘And Stacy hooked me up with some rad wallpaper today.’
- ‘We saw the Lichtenstein exhibit which was rad, and the Glamour exhibit which was kinda whack.’
1980s probably an abbreviation of radical.
- ‘Take care when taking the rad off its wall - brackets.’
- ‘I can always put off doing the woodwork and rad until a later date, although I'd like to get it done fairly soon.’
(in the UK) Royal Academy of Dance.