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Medical Term:


Pronunciation: ă-krē′shŭn


  1. Increase by addition to the periphery of material of the same nature as that already present; the manner of growth of crystals.
  2. In dentistry, foreign material (usually plaque or calculus) collecting on the surface of a tooth or in a cavity.
  3. A growing together.

Synonym(s): accrementition2

[L. accretio, fr. ad, to, + crescere, to grow]