Found 2 items, similar to impaction.
English → English (WordNet) Definition: impaction impaction n 1: the condition of being pressed closely together and firmly fixed 2: a disorder in which feces are impacted in the lower colon 3: a disorder in which a tooth is so crowded in its socket that it cannot erupt normally [syn: impacted tooth] 4: a sharp collision produced by striking or dashing against something [syn: impingement]
English → English (gcide) Definition: Impaction Impaction \Im*pac"tion\, n. [L. impactio a striking : cf. F. impaction.] 1. (Surg.) The driving of one fragment of bone into another so that the fragments are not movable upon each other; as, impaction of the skull or of the hip. [1913 Webster] 2. An immovable packing; (Med.), a lodgment of something in a strait or passage of the body; as, impaction of the fetal head in the strait of the pelvis; impaction of food or feces in the intestines of man or beast. [1913 Webster]