isotope

noun
iso·​tope | \ ˈī-sə-ˌtōp How to pronounce isotope (audio) \

Definition of isotope

1 : any of two or more species of atoms of a chemical element with the same atomic number and nearly identical chemical behavior but with differing atomic mass or mass number and different physical properties
2 : nuclide

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Other Words from isotope

isotopic \ ˌī-​sə-​ˈtä-​pik How to pronounce isotope (audio) , -​ˈtō-​ \ adjective
isotopically \ ˌī-​sə-​ˈtä-​pi-​k(ə-​)lē How to pronounce isotope (audio) , -​ˈtō-​ \ adverb

Examples of isotope in a Sentence

Recent Examples on the Web The researchers sliced open the whale tusks (which are actually teeth, made of dentine), ground parts of them into powder and analyzed the samples' isotope content. Todd Nelson, Star Tribune, 12 July 2021 Their strontium isotope composition indicates an age of about 80 million years. David Bressan, Forbes, 4 July 2021 The researchers were able to discover the men’s genetic connection—and other details about their lives—thanks to advances in DNA and strontium isotope testing, which offers insights into the movements of people around the ancient world. Livia Gershon, Smithsonian Magazine, 11 June 2021 The paper presents the results of nickel isotope analyses performed in Wasylenki's lab on Late Permian sedimentary rocks collected in Arctic Canada. David Bressan, Forbes, 22 June 2021 When sea-ice coverage plummeted after 1990, the carbon isotope profile began to change. Susan Cosier, Scientific American, 21 June 2021 The large variation in isotope values between the soldiers from our study strongly implies that there may have been foreign soldiers who joined the Greek side. Katherine Reinberger, The Conversation, 12 May 2021 Most of the radioactive isotopes have been removed using a complex filtration process, but the isotope tritium can't be removed, so the water has been stored in huge tanks that will fill up by 2022, the BBC reported. Kaelan Deese, Washington Examiner, 13 Apr. 2021 Micro-sized single crystal diamonds move heat away from the radioactive isotope materials so quickly that the transaction generates electricity. Caroline Delbert, Popular Mechanics, 30 Mar. 2021

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

1913, in the meaning defined at sense 1

History and Etymology for isotope

is- + Greek topos place

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Time Traveler for isotope

Time Traveler

The first known use of isotope was in 1913

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Statistics for isotope

Last Updated

22 Jul 2021

Cite this Entry

“Isotope.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/isotope. Accessed 23 Jul. 2021.

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More Definitions for isotope

isotope

noun

English Language Learners Definition of isotope

chemistry : any one of various forms in which the atoms of a chemical element can occur

isotope

noun
iso·​tope | \ ˈī-sə-ˌtōp How to pronounce isotope (audio) \

Medical Definition of isotope

1 : any of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behavior but with differing atomic mass or mass number and different physical properties
2 : nuclide

Other Words from isotope

isotopic \ ˌī-​sə-​ˈtäp-​ik How to pronounce isotope (audio) , -​ˈtō-​pik How to pronounce isotope (audio) \ adjective
isotopically \ -​ˈtäp-​i-​k(ə-​)lē How to pronounce isotope (audio) , -​ˈtō-​pi-​ How to pronounce isotope (audio) \ adverb
isotopy \ ˈī-​sə-​ˌtō-​pē How to pronounce isotope (audio) , ī-​ˈsät-​ə-​pē How to pronounce isotope (audio) \ noun, plural isotopies

More from Merriam-Webster on isotope

Nglish: Translation of isotope for Spanish Speakers

Britannica English: Translation of isotope for Arabic Speakers

Britannica.com: Encyclopedia article about isotope

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