tro·​na ˈtrō-nə How to pronounce trona (audio)
: a gray-white or yellowish-white monoclinic mineral consisting of a hydrous acid sodium carbonate

Example Sentences

Recent Examples on the Web Her father was a mechanic in a trona mine, a mineral processed into baking soda, and her mother was a telephone operator. Daniel Golden, ProPublica, 4 July 2022 Employees’ existing skills also translate well to other mining jobs, including in the trona industry, which produces a source of soda ash, said Rick Lee, CEO of the Rock Springs Chamber of Commerce. From Usa Today Network And Wire Reports, USA TODAY, 21 July 2021 The Green River Basin trona patch is about 40 miles from Rock Springs. From Usa Today Network And Wire Reports, USA TODAY, 21 July 2021 Harpstreith added that the impact was compounded by the closing of businesses during the pandemic, and the shortfall in the global economy impacting Wyoming’s trona mining industry. Sarah Downey, Washington Examiner, 29 Dec. 2020 Current federal trona royalties range from 3% to 8%. Washington Post, 18 Oct. 2019 To make money, Staley spent two and a half summers mining trona, a mineral used to make baking soda, in Rock Springs, Wyo. Kate Kelly, New York Times, 26 Aug. 2017 See More

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

Word History


Swedish, probably from Arabic natrūn natron — more at natron

First Known Use

1799, in the meaning defined above

Time Traveler
The first known use of trona was in 1799

Dictionary Entries Near trona

Cite this Entry

“Trona.” Dictionary, Merriam-Webster, Accessed 2 Feb. 2023.

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