- the act or fact of encroaching or infringing: This is an impingement on the fundamental right of free speech.
- the act or fact of striking or touching something, or the effect produced by this: The impingement on the diamond’s hard crystal surface is due to oxygen in the air.
- the act or fact of interfering with something, especially a nerve, through contact or pressure: Impingement on the nerves can be relieved by removing the portion of the bone compressing the neural structures.
