'flame-cut' originates from the combination of 'flame' and 'cut', where 'flame' refers to a hot, glowing body of ignited gas, and 'cut' means to divide or separate with a sharp-edged instrument.

'flame-cut' evolved from the practice of using flames to cut through materials, a technique that became more common with the advent of industrial metalworking.

Initially, it meant 'to cut using a flame', and this meaning has largely remained the same in modern usage.