WordWeb Online

1. Using or skilled in using analysis (i.e., separating a whole--intellectual or substantial--into its elemental parts or basic principles)
   "analytical reasoning"; "an analytical mind";
   - analytic
    
2. (logic) of a proposition that is necessarily true independent of fact or experience
   "'all spinsters are unmarried' is an analytical proposition";
   - analytic

See also: a priori, deductive, logical

Encyclopedia: Analytical