From Old French 'amonter' (to mount up), from Latin 'ad montem' (to the mountain) — a total that piles up.
A quantity of something, especially the total of a thing or things.
From Old French 'amonter' meaning 'to go up, to mount up,' from 'a mont' (upward), from Latin 'ad montem' (to the mountain). The idea of a total 'mounting up' became a fixed quantity. Key roots: mons (Latin: "mountain").