1. [ noun ] a disorder in which a tooth is so crowded in its socket that it cannot erupt normally
Synonyms: impacted_tooth
Related terms: disorder
2. [ noun ] a disorder in which feces are impacted in the lower colon
Related terms: disorder
3. [ noun ] the condition of being pressed closely together and firmly fixed
Related terms: condition impact
4. [ noun ] a sharp collision produced by striking or dashing against something
Synonyms: impingement
Related terms: collision
Similar spelling:   impact