Soda

so'da, n. A caustic alkali; the protoxide metal sodium. — Carbonate of soda. The " soda commerce: it consists of carb'onic acid and soda, is chiefly obtained by treating common salt first sulphuric acid and then with chalk.— So'da-wa'ter, n. Water highly charged with carbonic acid, as an effervescing drink. — So'dium, -dY-um, yellowish white metallic element, soft like wax, lighter than water; the metallic base of soda.