: a unit of absorbed dose of ionizing radiation equal to an energy of 100 ergs per gram of irradiated material
slang
1
radian
2
radius
3
radix
Examples of rad in a Sentence
Recent Examples on the Web
Outside Online, 24 July 2024
Skateboarding Skateboarding is enjoying its second Olympics as an official sport, which is pretty rad.
—Michael Calore, WIRED, 24 July 2024
In this article are some of the most iconic, rad, beautiful women and men (to be clear: I'm not pictured) who reject the mainstream idea that thin equals beautiful.
—Tom Rasmussen, refinery29.com, 2 Jan. 2024
The boys and girls in his America have such a rad time together.
—Jonathan Bernstein, Rolling Stone, 4 July 2024
See all Example Sentences for rad 
Adjective
About three hours south of the Bay Area by car, Monterey gives a more relaxed city vibe, complete with easy beach access, delicious seaside eats, and a rad diving community.
—Outside Online, 24 July 2024
Skateboarding Skateboarding is enjoying its second Olympics as an official sport, which is pretty rad.
—Michael Calore, WIRED, 24 July 2024
In this article are some of the most iconic, rad, beautiful women and men (to be clear: I'm not pictured) who reject the mainstream idea that thin equals beautiful.
—Tom Rasmussen, refinery29.com, 2 Jan. 2024
The boys and girls in his America have such a rad time together.
—Jonathan Bernstein, Rolling Stone, 4 July 2024
See all Example Sentences for rad
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Cite this Entry
“Rad.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rad. Accessed 22 Aug. 2024.
Copy CitationMedical Definition
rad
1 of 2 noun
: a unit of absorbed dose of ionizing radiation equal to an energy of 100 ergs per gram of irradiated material
rad
2 of 2 abbreviation
root
—used in writing prescriptions
Etymology
Abbreviation
Latin radix
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