radioisotope

noun
ra·​dio·​iso·​tope | \ ˌrā-dē-ō-ˈī-sə-ˌtōp How to pronounce radioisotope (audio) \

Definition of radioisotope

: a radioactive isotope

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Other Words from radioisotope

radioisotopic \ ˌrā-​dē-​ō-​ˌī-​sə-​ˈtä-​pik How to pronounce radioisotopic (audio) , -​ˈtō-​ \ adjective
radioisotopically \ ˌrā-​dē-​ō-​ˌī-​sə-​ˈtä-​pi-​k(ə-​)lē How to pronounce radioisotopically (audio) \ adverb

Examples of radioisotope in a Sentence

Recent Examples on the Web The major breakthrough is the radioisotope identification device in Tang’s pocket, the D3S, which was built by the British company Kromek. Dan Dubno, Popular Mechanics, "This Tiny Device Can Detect Nuclear Armageddon," 25 Apr. 2019 Curiously, the radioisotope levels found in Naen island’s soils — located around 100 miles away — were roughly the same as those found at the Castle Bravo explosion site. Susanne Rust, Los Angeles Times, "Radiation in parts of the Marshall Islands is far higher than Chernobyl, study says," 15 July 2019 Curiously, the radioisotope levels found in Naen island’s soils — located around 100 miles away — were roughly the same as those found at the Castle Bravo explosion site. Susanne Rust, latimes.com, "Radioactivity in parts of the Marshall Islands is far higher than Chernobyl, study says," 15 July 2019 Plutonium-238 is a radioisotope associated with nuclear waste and not generally with fallout, said Ivana Nikolic Hughes, a co-author of the research and an associate professor of chemistry at Columbia. Susanne Rust, Los Angeles Times, "Radiation in parts of the Marshall Islands is far higher than Chernobyl, study says," 15 July 2019 Plutonium-238 is a radioisotope associated with nuclear waste and not generally with fallout, said Ivana Nikolic Hughes, a co-author of the research and an associate professor of chemistry at Columbia. Susanne Rust, latimes.com, "Radioactivity in parts of the Marshall Islands is far higher than Chernobyl, study says," 15 July 2019 These journeys—covering distances of up to five miles at speeds of around 20 miles per hour—will be powered by heat released by decaying plutonium-238 in a radioisotope thermoelectric generator (RTG), according to Vox’s Brian Resnick. Meilan Solly, Smithsonian, "NASA’s Dragonfly Mission Will Fly Through the Clouds of Titan, Saturn’s Biggest Moon," 28 June 2019 And just like Curiosity, Dragonfly will be nuclear-powered, carrying a radioisotope thermoelectric generator. Shannon Stirone, Scientific American, "New NASA Mission Will Fly Titan’s Frigid Skies to Search for Life’s Beginnings," 27 June 2019 The radioisotope is crucial for fueling long-term deep space missions, but as of 2017, a shortage was on the horizon. David Grossman, Popular Mechanics, "Scientists Find a New Way To Create the Plutonium That Powers Deep Space Missions," 8 Jan. 2019

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

1938, in the meaning defined above

History and Etymology for radioisotope

International Scientific Vocabulary

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Time Traveler for radioisotope

Time Traveler

The first known use of radioisotope was in 1938

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Statistics for radioisotope

Cite this Entry

“Radioisotope.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radioisotope. Accessed 24 Feb. 2020.

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More Definitions for radioisotope

radioisotope

noun
ra·​dio·​iso·​tope | \ ˌrād-ē-ō-ˈī-sə-ˌtōp How to pronounce radioisotope (audio) \

Medical Definition of radioisotope

: a radioactive isotope — compare radioelement

Other Words from radioisotope

radioisotopic \ -​ˌī-​sə-​ˈtäp-​ik, -​ˈtōp-​ik How to pronounce radioisotopic (audio) \ adjective
radioisotopically \ -​i-​k(ə-​)lē How to pronounce radioisotopically (audio) \ adverb

More from Merriam-Webster on radioisotope

Britannica English: Translation of radioisotope for Arabic Speakers

Britannica.com: Encyclopedia article about radioisotope

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