粉碎
Comminution \Com`mi*nu"tion\, n. 1. The act of reducing to a fine powder or to small particles; pulverization; the state of being comminuted. --Bentley. 2. (Surg.) Fracture (of a bone) into a number of pieces. --Dunglison. 3. Gradual diminution by the removal of small particles at a time; a lessening; a wearing away. Natural and necessary comminution of our lives. --Johnson.