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lacrimal sac

noun, Anatomy.
the dilated upper portion of the nasolacrimal duct that receives tears from the lacrimal ducts.
Origin of lacrimal sac
First recorded in 1770-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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lacrimal sac in Medicine

lacrimal sac n.
The upper portion of the nasolacrimal duct into which the two lacrimal ducts empty. Also called dacryocyst, tear sac.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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