Also eth·moi·dal. of or relating to a bone at the base of the cranium and the root of the nose, containing numerous perforations for the filaments of the olfactory nerve.


the ethmoid bone.

Origin of ethmoid

1735–45; < Greek ēthmoeidḗs sievelike; see -oid
Related formspost·eth·moid, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Historical Examples of ethmoid

British Dictionary definitions for ethmoid


adjective Also: ethmoidal

denoting or relating to a bone of the skull that forms part of the eye socket and the nasal cavity


the ethmoid bone

Word Origin for ethmoid

C18: from Greek ēthmoeidēs like a sieve, from ēthmos sieve, from ēthein to sift
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

ethmoid in Medicine




Resembling a sieve.


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