To remove the caffeine from something, especially coffee or tea.
From 'de-' (remove) + 'caffeine' (the stimulating chemical found in coffee). The word was created in the early 1900s when chemists developed methods to extract caffeine from beverages.
The invention of decaffeinated coffee in 1901 by accident—a ship carrying coffee beans got flooded with seawater, and when traders tried to salvage them, they discovered the water had removed the caffeine—changed how millions of people could enjoy coffee before bed!
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