Comminution

Comˊmi-nu′tion

,

Noun.

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.

, n.

1.

The act of reducing to a fine powder or to small particles; pulverization.

2.

Attenuation; as comminution of spirits.

comminution ‎(plural comminutions)

(mining, waste management) The breaking or grinding up of a material to form smaller particles.
(traumatology) Fracture of a bone site in multiple pieces (at least three); crumbling.

Differs from compound = open fracture. (Mix forms do happen though.)