'quantify' originates from Latin, specifically the word 'quantificare', where 'quantus' meant 'how much' and 'facere' meant 'to make'.

'quantificare' transformed into the French word 'quantifier', and eventually became the modern English word 'quantify' through Middle English.

Initially, it meant 'to make something measurable', but over time it evolved into its current meaning of 'to express or measure the quantity of something'.