rad

noun
\ ˈrad How to pronounce rad (audio) \

Definition of rad

 (Entry 1 of 3)

: a unit of absorbed dose of ionizing radiation equal to an energy of 100 ergs per gram of irradiated material

Definition of rad (Entry 2 of 3)

Definition of rad (Entry 3 of 3)

1 radian
2 radius
3 radix

Examples of rad in a Sentence

Recent Examples on the Web: Adjective There aren't nearly enough coming-of-age movies like this out there for teenage girls to begin with, and the fact that this one gets to live on as a series is pretty rad. Leah Marilla Thomas, refinery29.com, "Where To Watch Skate Kitchen If HBO’s Betty Is Your Newest Obsession," 1 May 2020 Also rad: the Lyrid shower is one of the oldest known meteor showers, having been observed for over 2,700 years, according to NASA. Elizabeth Depompei, The Courier-Journal, "Want to see fireballs in Louisville tonight? A clear sky and the Lyrid shower will help," 21 Apr. 2020 Also rad: the Lyrid shower is one of the oldest known meteor showers, having been observed for over 2,700 years, according to NASA. Elizabeth Depompei, Indianapolis Star, "Tuesday night will be an 'ideal' time to see fireballs in the Indiana sky. Here's when.," 21 Apr. 2020 The updated Origin EON15-X is about to disappoint all the enthusiasts who thought their 8-core laptop was pretty rad. Gordon Mah Ung, PCWorld, "The Origin 12-core Ryzen 9 EON15-X wins for Monster Ryzen Laptop of the week," 8 Apr. 2020 Photographed by Seleen Saleh Shop This Orly Haute Red £6.15 OPI Big Apple Red £8.78 This geometric tip is another rad play on the design, but made even more chic in a classic shade of red. Megan Decker, refinery29.com, "The L.A. Nail Trend Sweeping Paris Fashion Week," 3 Mar. 2020 Try attaching it to the underside of an RC car for some seriously rad Fast and Furious effects. Jennifer Leman, Popular Mechanics, "How to Make Homemade Dry Ice," 5 Jan. 2020 Cleveland's a pretty rad town, with lots of cool stuff to do. Abby Gardner, Glamour, "The Bachelor Contestants Had Hilarious Reactions to Their First Trip With Peter," 28 Jan. 2020 Learn more Patricia Arquette ✔ @PattyArquette That’s rad!! Melissa Locker, Time, "What Gravity? Let This Mom Nailing the Gymnastics Move She Always Feared Be Your New Motivation Icon," 20 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rad.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of rad

Noun

circa 1953, in the meaning defined above

Adjective

1982, in the meaning defined above

History and Etymology for rad

Noun

radiation absorbed dose

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Time Traveler for rad

Time Traveler

The first known use of rad was circa 1953

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Statistics for rad

Cite this Entry

“Rad.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rad. Accessed 1 Jun. 2020.

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More Definitions for rad

English Language Learners Definition of rad

US slang : very appealing or good

rad

noun
\ ˈrad How to pronounce rad (audio) \

Medical Definition of rad

 (Entry 1 of 2)

: a unit of absorbed dose of ionizing radiation equal to an energy of 100 ergs per gram of irradiated material

Medical Definition of rad (Entry 2 of 2)

root used in writing prescriptions

History and Etymology for rad

Abbreviation

Latin radix

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More from Merriam-Webster on rad

Rhyming Dictionary: Words that rhyme with rad

Nglish: Translation of rad for Spanish Speakers

Britannica English: Translation of rad for Arabic Speakers

Britannica.com: Encyclopedia article about rad

Comments on rad

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