Cleaned something by destroying germs and harmful microorganisms, usually with chemicals or heat.
From Latin 'dis-' (away, reverse) + 'infect' (from 'inficere,' to stain). The prefix 'dis-' reverses the action of infection, a concept developed in the 1800s as germ theory emerged.
Before Louis Pasteur proved germs caused disease, disinfection was basically guesswork—people burned things or used random substances! The word itself became scientifically precise only after we understood what infection actually was.
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