a. Any of various forms of sodium carbonate.
b. Chemically combined sodium.
a. See carbonated water.
3. A refreshment made from carbonated water, ice cream, and usually a flavoring.
4. Games The card turned face up and discarded at the beginning of faro.
[Middle English sode, soda, saltwort, soda, from Old Italian soda, perhaps from Arabic suwayd, soda, soda-plant or suwayda, type of saltwort; see šwd in the Appendix of Semitic roots.]
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