Meaning of impaction

im•pac•tion

Pronunciation: (im-pak'shun), [key]
— n.
  1. an act or instance of impacting.
  2. the state of being impacted; close fixation.
  3. the condition in which a tooth is impacted.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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