Definition of refinement

• a highly developed state of perfection; having a flawless or impeccable quality; "they performed with great polish"; "I admired the exquisite refinement of his prose"; "almost an inspiration which gives to all work that finish which is almost art"--Joseph Conrad
• the result of improving something; "he described a refinement of this technique"
• the process of removing impurities (as from oil or metals or sugar etc.)