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 Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for lacrimal sac

lacrimal sac


The upper portion of the nasolacrimal duct into which the two lacrimal ducts empty.dacryocyst tear sac
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.