tantalum

noun

tan·​ta·​lum ˈtan-tə-ləm How to pronounce tantalum (audio)
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The mines produce coltan — short for columbite-tantalite — an ore from which the metals tantalum and niobium are extracted. David Yusufu Kibingila, Los Angeles Times, 23 May 2025 China refines 90 percent of the world’s rare earths; the tantalum in your phone is probably sourced from a mine in the Democratic Republic of the Congo; its processor likely came from Taiwan. Damon Beres, The Atlantic, 8 Apr. 2025 Since Trump took office, critical minerals such as cobalt, lithium, and tantalum, which are arguably as important to the tech world as oil is, have been top of mind. Nicolas Niarchos, New Yorker, 15 Apr. 2025 China remains a key supplier of minerals to the U.S., ranking second only to Canada in overall net import reliance, and is the principal import source for many of the 50 minerals America considers critical, such as graphite, tantalum and rubidium. John Feng, Newsweek, 2 Mar. 2025 See All Example Sentences for tantalum

Word History

Etymology

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

First Known Use

1809, in the meaning defined above

Time Traveler
The first known use of tantalum was in 1809

Browse Nearby Words

Cite this Entry

“Tantalum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tantalum. Accessed 28 May. 2025.

Kids Definition

tantalum

noun
tan·​ta·​lum ˈtant-ᵊl-əm How to pronounce tantalum (audio)
: a gray-white metallic element found in rare minerals and used especially in electronic devices see element

Medical Definition

tantalum

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

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