The hissing or bubbling sound made by gas escaping from a liquid, especially in carbonated drinks.
Onomatopoeia—the word imitates the sound itself. Entered English around the 1600s-1700s. Related to similar sound-words like 'fizzle' and 'sizzle'.
The 'fizz' you hear in soda is actually millions of carbon dioxide bubbles collapsing as they race to the surface—each tiny 'pfft' contributes to the overall hissing sound!
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