Obs. rare. [mod.L. soda, ad. G. sod (sode), MLG. sode, Du. zode, Fris. soad(e, related to SEETHE v.] A form of indigestion; heart-burn.

1

  Never actually adopted in English use.

2

1693.  trans. Blancard’s Phys. Dict. (ed. 2), Soda, the same with Ardor ventriculi [= Heart-burning].

3

1753.  Chambers’ Cycl., Suppl., Soda,… an uneasy and troublesome sensation of heat about the orifice of the stomach.

4