rhe·​ni·​um | \ ˈrē-nē-əm How to pronounce rhenium (audio) \

Definition of rhenium

: a rare heavy metallic element that is obtained either as a gray powder or as a silver-white hard metal, is usually extracted as a by-product of molybdenum smelting, and is used especially in catalysts and alloys — see Chemical Elements Table

Examples of rhenium in a Sentence

Recent Examples on the Web The United States is more than 75% import reliant on an additional 10 critical minerals: antimony, barite, bauxite, bismuth, potash, rhenium, tellurium, tin, titanium concentrate, and uranium. Ariel Cohen, Forbes, 22 Sep. 2021 Developers have long been beckoned by a lode of gold, copper, rhenium and other minerals near southwestern Alaska’s Bristol Bay. Jennifer A Dlouhy, Bloomberg.com, 29 Oct. 2020 Scientists have captured video of a pair of rhenium atoms breaking apart and bonding again in a carbon nanotube. Theresa Machemer, Smithsonian Magazine, 22 Jan. 2020 An individual rhenium atom is just 205 picometers across: 205 trillionths of a meter, and .205 nanometers. Caroline Delbert, Popular Mechanics, 22 Jan. 2020 As a transition metal, rhenium can be creative with its bonds. Theresa Machemer, Smithsonian Magazine, 22 Jan. 2020 For example, the DoD is pushing to improve the recovery of rhenium, a rare earth element that is key to produce the new stealth Joint Strike Fighters for its exceptional heat-resistant properties. Lorenzo Franceschi-bicchierai, WIRED, 7 Aug. 2012 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rhenium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of rhenium

1925, in the meaning defined above

History and Etymology for rhenium

New Latin, from Latin Rhenus Rhine River

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The first known use of rhenium was in 1925

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Rhenish architecture



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Cite this Entry

“Rhenium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rhenium. Accessed 2 Jul. 2022.

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More Definitions for rhenium


rhe·​ni·​um | \ ˈrē-nē-əm How to pronounce rhenium (audio) \

Medical Definition of rhenium

: a rare heavy metallic element that resembles manganese, is obtained either as a powder or as a silver-white hard metal, and is used in catalysts for dehydrogenation and in thermocouples symbol Re — see Chemical Elements Table

More from Merriam-Webster on rhenium

Britannica.com: Encyclopedia article about rhenium


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