n. 粉碎

[化] 粉碎; 粉碎作用

[医] 粉碎, 捣碎

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.