'indentation' originates from the Latin word 'indenta,' where 'in-' meant 'into' and 'denta' referred to 'tooth-like notches.'

'indenta' transformed into the Old French word 'indentacion,' and eventually became the modern English word 'indentation.'

Initially, it meant 'tooth-like notches,' but over time it evolved into its current meaning of 'a space left at the beginning of a line of text or a notch in a surface.'