- a small, thin, membrane bone forming the front part of the inner wall of each orbit.
Origin of lacrimal bone
First recorded in 1850–55
Also called lacrimal.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- A thin irregularly rectangular plate forming part of the medial wall of the eye socket behind the frontal process of the maxilla.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.