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dacryocystorhinostomy

(dăk′rē-ō-sĭs′tə-rī-nŏstə-mē)
n.
  1. The surgical opening of a passage for drainage from the lacrimal sac into the nasal cavity.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.