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Definition of Washing soda
1. Noun. A sodium salt of carbonic acid; used in making soap powders and glass and paper.
Definition of Washing soda
1. Noun. sodium carbonate used as a laundry aid ¹
¹ Source: wiktionary.com
Medical Definition of Washing soda
1. Na2CO3-10H2O;used in the treatment of scaly skin diseases; otherwise rarely used in medicine because of its irritant action. Synonym: sal soda, soda, washing soda. (05 Mar 2000)