• synonyms


  1. a monoclinic mineral, grayish or yellowish hydrous sodium carbonate and bicarbonate, Na2CO3⋅NaHCO3⋅2H2, occurring in dried or partly evaporated lake basins.
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Origin of trona

1790–1800; < Spanish < dialectal Arabic ṭrōn, aphetic variant of naṭrūn natron
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for trona

Historical Examples

  • A salt found native on the banks of the soda lakes of Sotrena, in Africa, whence it is exported as Trona.

    Cooley's Practical Receipts, Volume II

    Arnold Cooley

British Dictionary definitions for trona


  1. a greyish mineral that consists of hydrated sodium carbonate and occurs in salt deposits. Formula: Na 2 CO 3 NaHCO 3 .2H 2 O
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Word Origin

C18: from Swedish, probably from Arabic natrūn natron
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012