hafnium

noun
haf·​ni·​um | \ ˈhaf-nē-əm How to pronounce hafnium (audio) \

Definition of hafnium

: a metallic element that occurs especially in zirconium minerals and is used in control rods for nuclear reactors — see Chemical Elements Table

Examples of hafnium in a Sentence

Recent Examples on the Web To avoid this issue, Barfod and her colleagues decided to look into the relative ratios of isotopes of the element hafnium. Alex Fox, Smithsonian Magazine, "Ancient Rome’s Finest Glass Was Actually Made in Egypt," 5 Aug. 2020 One notable example was the discovery of three particularly rare elements found — hafnium, uranium and tungsten. Fox News, "Shocking Moon discovery: Earth's satellite 100M years older than previously thought, study says," 1 Aug. 2019 This turned out to be a layer of hafnium oxynitride just eight atoms thick. Daniel Oberhaus, WIRED, "New Designs Could Boost Solar Cells Beyond Their Limits," 11 July 2019 In between the blocks, the researchers placed a seven-nanometer layer of a mix of titanium oxide and hafnium oxide. John Timmer, Ars Technica, "Memristors built with 2-nanometer-thick parts," 14 Nov. 2018 One notable example was the discovery of three particularly rare elements found — hafnium, uranium and tungsten. Fox News, "Shocking Moon discovery: Earth's satellite 100M years older than previously thought, study says," 1 Aug. 2019 This turned out to be a layer of hafnium oxynitride just eight atoms thick. Daniel Oberhaus, WIRED, "New Designs Could Boost Solar Cells Beyond Their Limits," 11 July 2019 In between the blocks, the researchers placed a seven-nanometer layer of a mix of titanium oxide and hafnium oxide. John Timmer, Ars Technica, "Memristors built with 2-nanometer-thick parts," 14 Nov. 2018 Under normal circumstances, the titanium/hafnium oxide layer would act like an insulator and block current flow at the intersection of the copper wires. John Timmer, Ars Technica, "Memristors built with 2-nanometer-thick parts," 14 Nov. 2018

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

1923, in the meaning defined above

History and Etymology for hafnium

New Latin, from Hafnia (Copenhagen), Denmark

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The first known use of hafnium was in 1923

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Cite this Entry

“Hafnium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hafnium. Accessed 28 Oct. 2020.

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More Definitions for hafnium

hafnium

noun
haf·​ni·​um | \ ˈhaf-nē-əm How to pronounce hafnium (audio) \

Kids Definition of hafnium

: a gray metallic chemical element

hafnium

noun
haf·​ni·​um | \ ˈhaf-nē-əm How to pronounce hafnium (audio) \

Medical Definition of hafnium

: a metallic element that resembles zirconium chemically, occurs in zirconium minerals, and readily absorbs neutrons symbol Hf — see Chemical Elements Table

More from Merriam-Webster on hafnium

Nglish: Translation of hafnium for Spanish Speakers

Britannica.com: Encyclopedia article about hafnium

Comments on hafnium

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