English dictionary
trona
/'tr/oU/n/@/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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A native double salt, consisting of a combination of neutral and acid sodium carbonate, Na<sub>2</sub>CO<sub>3</sub>.<sub>2</sub>HNaCO<sub>3</sub>. <sub>2</sub>H<sub>2</sub>O, occurring as a white crystalline fibrous deposit from certain soda brine springs and lakes; -- called also <i>urao</i>, and by the ancients <i>nitrum</i>.
Source: webster1913