a. 1. Marking a difference; distinguishing. -- Dis*crim"i*na`ting*ly, adv. [1913 Webster]
And finds with keen discriminating sight, Black's not so black; -- nor white so very white. Canning. [1913 Webster]
2. making careful or fine distinctions, especially as to quality or accuracy; as, a discriminating observer. Syn. -- discerning, perspicacious. [PJC]
3. having a refined taste or excellent judgment; as, a discriminating taste. [PJC]