'hatcher' originates from Middle English, specifically the word 'hatchen,' where 'hatch' meant 'to produce young from eggs.'

'hatchen' transformed into the modern English word 'hatch,' and eventually became 'hatcher' to denote a person or device that hatches.

Initially, it meant 'to produce young from eggs,' but over time it evolved to include the meaning of a person or device that facilitates this process.