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The Collaborative International Dictionary
Comminuting

Comminute \Com"mi*nute\, v. t. [imp. & p. p. Comminuted; p. pr. & vb. n. Comminuting.] [L. comminutus, p. p. of comminuere to comminute; com- + minuere to lessen. See Minute.] To reduce to minute particles, or to a fine powder; to pulverize; to triturate; to grind; as, to comminute chalk or bones; to comminute food with the teeth.
--Pennant.

Comminuted fracture. See under Fracture.

Wiktionary
comminuting

vb. (present participle of comminute English)