sifting
• (n.) The act or process of separating the finer parts of drugs from the coarser by sifting.
1. Sifting; passing through a sieve. ... 2. The condition of being cribrate or numerously pitted or punctured. ... (05 Mar 2000) ... 
Cri·bra'tion noun [ Confer F. cribration , from Latin cribrare to sift. See Cribble , noun ] (Pharmacy) The act or process of separating the finer parts of drugs from the coarser by sifting. 
Type: Term Pronunciation: kri-brā′shŭn Definitions: 1. Sifting; passing through a sieve. 2. The condition of being cribrate or numerously pitted or punctured.