Sodium carbonate Meaning, Definition & Usage

  1. noun a sodium salt of carbonic acid; used in making soap powders and glass and paper
    sal soda; washing soda; soda ash; soda.

WordNet

Definitions
  1. a white crystalline substance, Na2CO3.10H2O, having a cooling alkaline taste, found in the ashes of many plants, and produced artifically in large quantities from common salt. It is used in making soap, glass, paper, etc., and as alkaline agent in many chemical industries. Called also sal soda, washing soda, or soda. Cf. Sodium bicarbonate, above and Trona.

Webster 1913