To remove or neutralize odor from something; to make something smell fresh or odorless.
From de- (remove) + odor (from Latin 'odoratus') + -ise (British spelling of -ize, from Greek '-izein'). Established as a verb in late 1800s with the rise of industrial chemistry and commercial fragrance products.
The word 'deodorise' didn't exist before chemistry made odor removal possible—this shows how new technologies literally create new words we need to describe the new things we can now do with the world.
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