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

rad

adjective

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: Noun

The news sent the shares of drugstore giants CVS Health (cvs, -9.28%), Walgreens Boots Alliance (wba, -9.34%), and Rite Aid (rad, -9.09%) plunging between 8% and 10%. Phil Wahba, Fortune, "Walgreens and CVS Shares Plunge After Amazon Announces Deal to Buy Online Pharmacy PillPack," 28 June 2018 The TRD Pro amplifies those feelings by a factor of rad. Andrew Wendler, Car and Driver, "2019 Toyota 4Runner TRD Pro: Be a Tough Guy, or Just Look Like One," 8 Feb. 2018 There’s so much rad s— happening right now in music. Dave Quinn, PEOPLE.com, "WATCH: Pink Tells Daughter ‘We Don’t Change’ in Inspiring Speech About Self-Acceptance at MTV VMAs," 28 Aug. 2017

Recent Examples on the Web: Adjective

Each ticket includes admission for a team of eight, access to the Tavern Buffet, a pretty rad t-shirt, parking validation, bottled water, and a donation to The Giving Kitchen. Shane Harrison, ajc, "Things to do in and around Atlanta: July 26-Aug. 3," 25 July 2019 In a missionary context, however, Ramsey insists that John’s plans were more rad than crazy. Alex Perry, Outside Online, "The Last Days of John Allen Chau," 24 July 2019 While in town, check out Neon Alley, a rad outdoor art gallery where two dozen neon signs glow. Brittany Anas, The Know, "Stay in a former jail, drive-in theater or goat lodge when visiting Colorado’s most unique hotels," 24 June 2019 The new flow area, designed to the rigorous-rad standards of the Vans Park Series pro tour terrain, offers a deep canyon of banks, bumps and curves that, when navigated correctly, help propel skaters round and round. Barbara Odanaka, latimes.com, "A guide to L.A.’s best skate parks," 7 June 2019 To hit that price, McLaren cut some of the $265,000 650's more expensive hardware (bye-bye, hydraulic anti-roll suspension and active aerodynamics) but the designers were smart enough to keep the rad doors. Ezra Dyer, Popular Mechanics, "The Palace of Perfectionism Where McLaren Supercars Are Born," 12 Feb. 2016 Carpenter kept things graphic and cute for her fitting in rad plaid pieces, but for the big day, upped her game with a fitted militaristic dress punctuated by equally bold accessories. Edward Barsamian, Vogue, "Va-Va-Versace! Sabrina Carpenter Goes Inside the Spectacular Spring Show," 24 Sep. 2018 But thanks to a new stable of pop-up merch slingers from coast to coast—like the GX1000 crew, pictured here, whose rad five-panels rep their hometown of San Francisco—standard-issue five-panels feel fresher than ever. The Editors Of Gq Style, GQ, "The 15 Raddest Dad Caps to Wear This Summer," 26 Apr. 2018 Rookie has a fairly straightforward mission: to speak honestly with teenagers and give them rad things to look at and think about. Amy Rose Spiegel, The Cut, "I Think About This a Lot: The ’90s Computer Game Chop Suey," 26 Feb. 2018

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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More Definitions for rad

rad

adjective

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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