tan·​ta·​lum | \ ˈtan-tə-ləm How to pronounce tantalum (audio) \

Definition of tantalum

: a gray-white ductile acid-resisting metallic element found combined in rare minerals (such as tantalite and columbite) and used especially in electronic components — see Chemical Elements Table

Examples of tantalum in a Sentence

Recent Examples on the Web There is also active mining in the region for diamonds and coltan, a metallic ore that yields the rare-earth element tantalum used in cellphones. Kejal Vyas |, WSJ, "Desperate Venezuelans Dig Up Paradise in Search of Gold," 20 Nov. 2018 Congo produces some two-thirds of the world’s cobalt, a mineral key in the production of lithium-ion batteries that power laptops and electric cars, as well as coltan, copper, tantalum and tin, all used in modern electronics. Gabriele Steinhauser, WSJ, "Congo Votes in Contentious Election," 30 Dec. 2018 Congo produces some two-thirds of the world’s cobalt, a mineral used in the production of lithium-ion batteries that power laptops and electric cars, and coltan, copper, tantalum and tin, all used in modern electronics. Nicholas Bariyo, WSJ, "Congo Keeps Voters in the Dark About Election Results," 2 Jan. 2019 The province is also close to the Ugandan and Rwandan borders, a major regional trade center for a range of commodities including mineral exports such as tin, tantalum and gold out of eastern Congo. Nicholas Bariyo, WSJ, "Ebola Outbreak Spreads to Conflict Zone in Democratic Republic of Congo," 14 Aug. 2018 Yes, things like that, or conflict minerals disclosure [which required companies to tell investors whether their products contained tantalum, tin, gold, or tungsten mined from the Democratic Republic of Congo]. Emily Stewart, Vox, "The first woman president of the NYSE would really rather not talk about her gender," 14 June 2018 Of these metals, tantalum exhibits a particularly appealing dark and stealthy lustre and was something of a signature material for the brand. Wei Koh, A-LIST, "How the Watch Industry Plundered the Periodic Table," 3 Apr. 2018 The new code raises taxes on other metals such as copper, tantalum and gold and scraps a provision that protects license holders from complying with any changes to the mining code for 10 years. Nicholas Bariyo, WSJ, "Mining Giants Face Blow From World’s No. 1 Cobalt Producer," 8 Mar. 2018 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

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

1809, in the meaning defined above

History and Etymology for tantalum

New Latin, from Latin Tantalus; from its inability to absorb acid

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Time Traveler for tantalum

Time Traveler

The first known use of tantalum was in 1809

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Cite this Entry

“Tantalum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tantalum. Accessed 22 Jan. 2021.

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More Definitions for tantalum


tan·​ta·​lum | \ ˈtant-ᵊl-əm How to pronounce tantalum (audio) \

Medical Definition of tantalum

: a hard ductile gray-white acid-resisting metallic element of the vanadium family found combined in rare minerals and sometimes used in surgical implants and sutures symbol Ta — see Chemical Elements Table

More from Merriam-Webster on tantalum

Britannica.com: Encyclopedia article about tantalum

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