ra·​di·​ant | \ ˈrā-dē-ənt How to pronounce radiant (audio) \

Definition of radiant

 (Entry 1 of 2)

1a : radiating rays or reflecting beams of light
b : vividly bright and shining : glowing
2 : marked by or expressive of love, confidence, or happiness a radiant smile
3a : emitted or transmitted by radiation
b : emitting or relating to radiant heat



Definition of radiant (Entry 2 of 2)

: something that radiates: such as
a : a point in the heavens at which the visible paths of meteors appear to meet when traced backward
b : the part of a gas or electric heater that becomes incandescent

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Other Words from radiant


radiantly adverb

Synonyms for radiant

Synonyms: Adjective

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Choose the Right Synonym for radiant


bright, brilliant, radiant, luminous, lustrous mean shining or glowing with light. bright implies emitting or reflecting a high degree of light. brilliant implies intense often sparkling brightness. radiant stresses the emission or seeming emission of rays of light. luminous implies emission of steady, suffused, glowing light by reflection or in surrounding darkness. lustrous stresses an even, rich light from a surface that reflects brightly without glittering.

Examples of radiant in a Sentence

Adjective She had a radiant inner glow. She looked radiant at her wedding.
Recent Examples on the Web: Adjective The home’s polished concrete floor on the main level has radiant heating. oregonlive, 13 Oct. 2021 Plus, radiant skin is the calling card of health-signalling, the new, subconscious desire to appear as healthy as can be to the outside world in reaction to the events of the past 18 months. Lottie Winter, Glamour, 23 Sep. 2021 The kitchen was gutted and rebuilt with new cabinets, marble countertops, top-end appliances and radiant in-floor heating. Nancy Ngo, Star Tribune, 21 July 2021 Hydronic radiant heating gives the floors an inviting sensation, while a gateway battery backup provides an uninterruptible power supply to keep critical systems up and running in the event of a power loss. Brenda Richardson, Forbes, 22 June 2021 But there’s also a saltwater infinity pool, two propane generators, four geothermal ground loops, a home touch lighting system and radiant floor heating. Mary Carole Mccauley, baltimoresun.com, 2 June 2021 The shower's radiant point, where meteors appear to emerge, is at the head of the constellation Draco the Dragon, which the shower is named after. Sherry Liang, CNN, 8 Oct. 2021 Admirers took note of Seydoux’s seductive, quietly radiant hold on the screen. New York Times, 8 Oct. 2021 While the meteors streaking through the sky can be traced back to Draco's dragon head – the radiant point from which the space rocks appear to emanate – the shooting stars can be seen from all areas of the sky. Julia Musto, Fox News, 6 Oct. 2021 Recent Examples on the Web: Noun About the size of a countertop toaster oven, the Pizzaiolo uses three types of heat (convective, conductive, and radiant) to mimic an old-fashioned brick oven. Matthew Kronsberg, WSJ, 8 Oct. 2021 The shower’s radiant is in the constellation of Lyra, which is centered on the bright star Vega. Jamie Carter, Forbes, 15 Apr. 2021 For as long as many can remember, Miya Marcano, decked out one year in hot pink and white feathers, participated in the beautiful pageantry, radiant in her bedazzled two-piece bodysuit and matching silver boots. Eileen Kelley, sun-sentinel.com, 5 Oct. 2021 Steinfeld stepped out in a glittering beige slip Iris Van Herpen dress with radiant, petal-shaped panels and matching Jimmy Choo platforms for fashion's biggest night. Vanessa Etienne, PEOPLE.com, 14 Sep. 2021 For those in the Southern Hemisphere, the radiant is closer to overhead; people in the Northern Hemisphere should look to the southern part of the sky. Kristen Rogers, CNN, 28 July 2021 Not only does this foaming cleanser help remove dirt, oil, and makeup from the pores, but the exfoliating enzyme-rich formula also smooths away unwanted texture and dead skin cells to create a radiant and more youthful-looking complexion. Ariel Scotti, PEOPLE.com, 13 Aug. 2021 Together, these ingredients help give skin its most radiant, firming, plumping glow. Adam Hurly, Robb Report, 29 July 2021 Perseid, the most popular shower of the year, stems from a different radiant point, is brighter than Delta Aquariids and peaks during the early mornings of August 11-13. Kristen Rogers, CNN, 28 July 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'radiant.' 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 radiant


15th century, in the meaning defined at sense 1a


circa 1741, in the meaning defined above

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Time Traveler for radiant

Time Traveler

The first known use of radiant was in the 15th century

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Dictionary Entries Near radiant



radiant energy

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Last Updated

24 Oct 2021

Cite this Entry

“Radiant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radiant. Accessed 27 Oct. 2021.

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More Definitions for radiant



English Language Learners Definition of radiant

: having or showing an attractive quality of happiness, love, health, etc.
: bright and shining
: sent out from something in rays or waves that you cannot see


ra·​di·​ant | \ ˈrā-dē-ənt How to pronounce radiant (audio) \

Kids Definition of radiant

1 : giving out or reflecting rays of light the radiant sun
2 : glowing with love, confidence, or joy a radiant smile
3 : transmitted by radiation


ra·​di·​ant | \ ˈrād-ē-ənt How to pronounce radiant (audio) \

Medical Definition of radiant

1 : emitted or transmitted by radiation
2 : emitting or relating to radiant heat

More from Merriam-Webster on radiant

Nglish: Translation of radiant for Spanish Speakers

Britannica English: Translation of radiant for Arabic Speakers

Britannica.com: Encyclopedia article about radiant


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