1582, of metals, 1588 of manners, from re-, intensive prefix + obs. fine (v.) "make fine," from fine (adj.) "delicate" (q.v.). Cf. Fr. raffiner, It. raffinare, Sp. refinar. General and fig. sense is recorded from 1596; of sugar, from 1613. Refinery in various senses is first
recorded 1727. Refinement "act or process of refining" is from 1611; meaning "fineness of feeling" is from 1708.