ul·​tra·​maf·​ic ˌəl-trə-ˈma-fik How to pronounce ultramafic (audio)

Examples of ultramafic in a Sentence

Recent Examples on the Web But since then, researchers have melted ultramafic rocks, which are rich in iron and magnesium and are highly conductive. Patrick Morgan, Discover Magazine, 15 May 2011 Quarrying, crushing, and grinding ultramafic rocks would cost only about $10 per ton of CO2 absorbed, Wilson and her team estimate. Robert F. Service, Science | AAAS, 3 Sep. 2020 Wilson and her colleagues sprayed the mine’s ultramafic rock tailings with dilute sulfuric acid, causing magnesium to leach out. Robert F. Service, Science | AAAS, 3 Sep. 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ultramafic.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1933, in the meaning defined above

Time Traveler
The first known use of ultramafic was in 1933

Dictionary Entries Near ultramafic

Cite this Entry

“Ultramafic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultramafic. Accessed 23 Feb. 2024.

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