Soda

sō′da, n. oxide of sodium, or its hydrate: the alkali obtained from the ashes of marine vegetables, or by decomposing sea-salt: ( coll. ) soda-water.— ns. Sō′da-ash , sodium carbonate; Sō′da-crack′er , a biscuit made of flour and water, with salt, bicarbonate of soda, and cream of tartar; Sō′da-fount′ain , a metal or marble case for holding water charged with carbonic-acid gas.— adj. Sodā′ic , pertaining to, or containing, soda.— ns. Sō′da-lime , a mixture of caustic soda and quicklime; Sō′dalite , a mineral composed chiefly of soda, along with silica, alumina, and hydrochloric acid; Sō′da-pā′per , a paper saturated with sodium carbonate; Sō′da-salt , a salt having soda for its base; Sō′da-wa′ter , water containing soda charged with carbonic acid; Sō′dium , a yellowish-white metal, the base of soda. [It. soda —L. solid a , firm.]