'blister' originates from Middle English, specifically the word 'blistere', where the term referred to a 'bubble' or raised swelling.

'blister' changed from Middle English 'blistere' (itself influenced by Old French forms) and eventually became the modern English word 'blister'.

Initially it referred generally to a 'bubble' or swelling (the idea of a small rounded swelling); over time it narrowed to the common modern meaning of a fluid-filled swelling on skin or a blister-like raise on surfaces.