To remove cocaine from something, especially to produce a cocaine-free version of a substance.
From de- 'remove' plus cocainize (from cocaine, ultimately from Quechua koka, the coca plant). A technical term from pharmaceutical chemistry in the late 1800s.
Coca-Cola was literally 'decocainized' in 1903—the original formula contained cocaine from coca leaf extract, and pharmacists removed it when cocaine's dangers became known. It's the wild history hiding in America's favorite soda.
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