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View synonyms for
rad
1[ rad ]
noun
Physics.
- a unit of absorbed dose of radiation equal to 0.01 gray: not a standard SI unit, the rad is still used, especially in the U.S., but it is increasingly disfavored.
rad
2[ rad ]
noun
- Informal. a radical, especially a person with extreme views on political and social issues.
adjective
radder, raddest.
- Slang. excellent; wonderful; cool:
a high speed, high energy, totally rad racing game.
rad
3[ rad ]
abbreviation for
Mathematics.
- radian; radians.
rad.
4abbreviation for
Mathematics.
- radical.
- radix.
rad.
1abbreviation for
- radical
- radius
rad
2/ °ùæ»å /
noun
- 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
rad
3symbol for
- radian
rad
/ °ùă»å /
- 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.
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˜yÐÄvlog History and Origins
Origin of rad1
First recorded in 1915–20; r(adiation) a(bsorbed) d(ose)
Origin of rad2
Origin of rad3
First recorded in 1910–15; shortening
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˜yÐÄvlog History and Origins
Origin of rad1
C20: shortened from radiation
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Example Sentences
It’s just a rad place to be in.
From
So if I could sleep in until 9 a.m. or 9:30 a.m., that would be rad.
From
Here are three potential itineraries for three different kinds of rad dads: those who love the great outdoors, fall head over heels for food and dig the arts.
From
He says “rad†without irony and gets away with it.
From
She even got down and did some pretty rad splits on this long-forgotten sad carpet.
From
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