re·fine·ment 
/rɪˈfaɪnmənt/ noun
plural re·fine·ments /rɪˈfaɪnmənt/ noun 1 [noncount] : the act or process of removing unwanted substances from something : the act or process of making something pure
▪ oil refinement 2 [noncount] : the act or process of improving something — often + of ▪ the refinement of testing methods 3 [count] : an improved version of something — often + of ▪ The game is a refinement of last year's version. 4 [count] : a small change that improves something
▪ Several engine refinements have resulted in increased efficiency. 5 [noncount] : the quality of a person who has the good education, polite manners, etc., that are expected in people who belong to a high social class
▪ a person of great refinement
▪ oil refinement
▪ Several engine refinements have resulted in increased efficiency.
▪ a person of great refinement
