trona Meaning, Definition & Usage

Tro"na noun
Etymology
Of Egyptian or North African origin.
Definitions
  1. (Chem. & Min.) A native double salt, consisting of a combination of neutral and acid sodium carbonate, Na2CO3.2HNaCO3.2H2O, occurring as a white crystalline fibrous deposit from certain soda brine springs and lakes; -- called also urao, and by the ancients nitrum.

Webster 1913