trona

1 definition found

trona - Collaborative International Dictionary of English v.0.48 :

  Trona \Tro"na\, n. [Of Egyptian or North African origin.] (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.
     [1913 Webster]