- impaction - the condition of being pressed closely together and firmly fixed
--1 is a kind of condition, status
Derived form: verb impact1 - impaction - a disorder in which feces are impacted in the lower colon
--2 is a kind of disorder, upset
- impaction, impacted tooth - a disorder in which a tooth is so crowded in its socket that it cannot erupt normally
--3 is a kind of disorder, upset
- impingement, impaction - a sharp collision produced by striking or dashing against something
--4 is a kind of crash, smash
- impaction, impacted tooth - a disorder in which a tooth is so crowded in its socket that it cannot erupt normally