(p. pr. & vb. n.) of Sift.

amassing evidence appraisal assessment assortment bolting categorization clarification classification close inquiry colature culling department of investigation destructive distillation detection detective work distillation edulcoration elution elutriation essentialization evaluation exhaustive study extraction factoring filtering filtration gauging gradation grouping hearing identification indagation investigation investigative bureau leaching legislative investigation legwork lixiviation percolation perscrutation placement probe purification ranking refinement research riddling screening selection separation sieving sifting out sleuthing sorting sorting out spiritualization straining sublimation subordination taxonomy triage weighing winnowing witch-hunt