kryp·​ton | \ ˈkrip-ˌtän How to pronounce krypton (audio) \

Definition of krypton

: a colorless relatively inert gaseous element found in air in trace amounts and used especially in electric lamps — see Chemical Elements Table

Examples of krypton in a Sentence

Recent Examples on the Web In 1898, two British chemists by the names of Sir William Ramsay and Morris William Travers were credited for discovering the four gases that would eventually be used to create neon signs: neon, krypton, xenon and argon. Jennifer Nalewicki, Smithsonian Magazine, "A Vibrant Tour of America’s Neon Signs," 28 Feb. 2020 In the moon's vacuum, atoms of noble gases such as argon and krypton will be captured in the aluminum. James R. Berry, Popular Mechanics, "Man's First Day on the Moon," 19 July 2019 Mercury is much heavier than either xenon or krypton, so spacecraft carrying them would be able to generate more thrust. Avery Thompson, Popular Mechanics, "Space Startup Apollo Fusion Wants To Use Mercury as a Fuel—Report," 20 Nov. 2018 But Hahn and Strassmann knew nothing about krypton. Jeremy Bernstein, WSJ, "Review: Enrico Fermi, ‘The Last Man Who Knew Everything’," 15 Dec. 2017 The new model suggests our home planet contains significantly more sodium, potassium, chlorine, zinc, strontium, fluorine, gallium, rubidium, niobium, gadolinium, tantalum, helium, argon, and krypton than previously believed. Jay Bennett, Popular Mechanics, "Scientists Create Most Accurate Estimate of Earth's Composition," 18 Sep. 2017 Alas, the fuddy-duddies of international mineral nomenclature insist that, since the stone doesn’t actually contain the real-world element krypton, it can’t be officially called kryptonite. Brandon Keim, WIRED, "Kryptonite Is Real," 24 Apr. 2007

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

1898, in the meaning defined above

History and Etymology for krypton

Greek, neuter of kryptos hidden — more at crypt

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Time Traveler for krypton

Time Traveler

The first known use of krypton was in 1898

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Cite this Entry

“Krypton.” Dictionary, Merriam-Webster, Accessed 21 Sep. 2020.

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How to pronounce krypton (audio)

English Language Learners Definition of krypton

: a chemical element that is a colorless gas and that is used especially in electric lights


kryp·​ton | \ ˈkrip-ˌtän How to pronounce krypton (audio) \

Medical Definition of krypton

: a colorless relatively inert gaseous element found in air at about one part per million symbol Kr — see Chemical Elements Table

More from Merriam-Webster on krypton

Nglish: Translation of krypton for Spanish Speakers Encyclopedia article about krypton

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