Definition for SO'DA

SO'DA, n. [G. soda; D. souda; It. soda; Sp. soda or sosa, glasswort, barilla.]

  1. The protoxyd of the metal sodium, formerly called, though not appropriately, mineral alkali. It has likewise been called fixed alkali, in contradistinction from ammonia, which is a volatile alkali.
  2. The carbonate of soda, formerly called natron, obtained by lixiviating the ashes of marine plants. In this state however, it is never pure.

Return to page 186 of the letter “S”.