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retrusion

[ri-troo-zhuh n, -shuh n]
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noun Dentistry.
  1. the act of moving a tooth backward.
  2. a condition characterized by the backward displacement of a tooth or teeth.
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Origin of retrusion

1650–60; < Latin retrūs(us) removed, concealed (past participle of retrūdere; see retrude) + -ion
Related formsre·tru·sive [ri-troo-siv] /rɪˈtru sɪv/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

retrusive in Medicine

retrusion

(rĭ-trōōzhən)
n.
  1. Retraction from any given point, especially the backward movement of the mandible.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.