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passavant's cushion in Medicine

Passavant's cushion

(păsə-vănts′)
n.
  1. A prominence on the posterior wall of the nasal pharynx formed by contraction of the superior constrictor of the pharynx during swallowing.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.