Plural of soda: sweet, fizzy drinks made by mixing water, sugar, and carbon dioxide gas.
From 'soda' (sodium carbonate), which comes from Italian 'soda', derived from Arabic 'suwwad', a plant whose ashes were used to make soda. The fizzy drink meaning developed in the 1800s.
The first sodas weren't sweet at all—they were medicinal drinks made with actual soda water believed to cure diseases, and the sugar was added later because customers thought sweet meant healthier and more delicious.
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