'disposer' originates from Middle English, specifically the word 'disposen,' where 'dis-' meant 'apart' and 'poser' meant 'to place.'

'disposen' transformed into the modern English word 'dispose,' and eventually became 'disposer' as a noun form.

Initially, it meant 'to arrange or set apart,' but over time it evolved into its current meaning of 'a person or device that disposes of something.'