\Crep`i*ta"tion\ (kr?p`?-t?"sh?n), n. [Cf. F. cr['e]pitation.] 1. The act of crepitating or crackling. 2. (Med.) (a) A grating or crackling sensation or sound, as that produced by rubbing two fragments of a broken bone together, or by pressing upon cellular tissue containing air. (b) A crepitant r[^a]le.