: a usually greenish mineral that is a complex silicate of magnesium and iron used especially in refractories compare peridot

Examples of olivine in a Sentence

Recent Examples on the Web
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As the cone eroded over time, olivine crystals became concentrated in this area. Lydia Mansel, Travel + Leisure, 26 Dec. 2025 This involves adding finely ground olivine—a naturally occurring olive-green colored mineral—to sandy beaches. ArsTechnica, 11 Aug. 2025 Both meteorites contain olivine and pyroxene, minor albitic plagioclase, and oldhamite. Ben Rider-Stokes, JSTOR Daily, 17 July 2025 Its floor is nearly entirely covered in dark, mineral-rich rock — known as mafic material — containing magnesium, iron and minerals such as pyroxine and olivine. Samantha Mathewson, Space.com, 6 Mar. 2026 See All Example Sentences for olivine

Word History

Etymology

German Olivin, from Latin oliva

First Known Use

1794, in the meaning defined above

Time Traveler
The first known use of olivine was in 1794

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Cite this Entry

“Olivine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/olivine. Accessed 7 Jul. 2026.

Kids Definition

: a usually greenish mineral that is a silicate of magnesium and iron

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