rad
pronunciation
How to pronounce rad in British English:
UK [ræd]
How to pronounce rad in American English:
US [ræd]
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- Noun:
- a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material
- 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)
Word Origin
- 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.)).
Example
- 1. It 's pretty rad up close .
- 2. Von rad suggests that the figure may have been inserted into some of the older traditions in place of an original canaanite numen .
- 3. That head butt was so damn rad .
- 4. And what strategies will shanghai rad apply on sailing and marketing ?
- 5. He was so rad in zardoz .