ethmoid(redirected from ethmoid bones)
Also found in: Dictionary, Thesaurus.
1. sievelike; cribriform.
2. ethmoid bone.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
an irregularly shaped bone lying between the orbital plates of the frontal bone and anterior to the sphenoid bone of the cranium; it consists of two lateral ethmoidal labyrinths of thin plates enclosing air cells, attached above to a perforated horizontal lamina, the cribriform plate, from which descends a median, vertical, perpendicular plate in the interval between the two labyrinths; the bone articulates with the sphenoid, frontal, maxillary, lacrimal, and palatine bones, the inferior nasal concha, and the vomer; it enters into the formation of the anterior cranial fossa, the orbits, and the nasal cavity, forming the supreme, superior, and middle conchae of the latter.
Farlex Partner Medical Dictionary © Farlex 2012
Of, relating to, or being a light spongy bone located between the ocular orbits, forming part of the walls and septum of the superior nasal cavity, and containing numerous perforations for the passage of the fibers of the olfactory nerves.
The ethmoid bone.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
1. Resembling a sieve.
2. Relating to the ethmoid bone.
[G. ēthmos, sieve, + eidos, resemblance]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012