- (n.) 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.
- (n.) 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.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). impaction. Retrieved September 21, 2026, from http://smartdefine.org/impaction/definitions/2019350 |
| Chicago | Webster's. 2011. "impaction" http://smartdefine.org/impaction/definitions/2019350 (accessed September 21, 2026). |
| Harvard | Webster's 2011, impaction, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/impaction/definitions/2019350>. |
| MLA | Webster's. "impaction" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/impaction/definitions/2019350> |