ethmoid

American  

[eth-moid] / ˈɛθ mɔɪd /

adjective

1. Also ethmoidal 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.

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noun

1. the ethmoid bone.

ethmoid British  

/ ˈɛθmɔɪd /

adjective

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

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noun

1. the ethmoid bone

Other Word Forms

• postethmoid adjective

Etymology

Origin of ethmoid

1735–45; < Greek ēthmoeidḗs sievelike; -oid

Example Sentences

It is divided at the midline by the crista galli and cribriform plates of the ethmoid bone.

From Textbooks • Jun. 19, 2013

The axon of an olfactory neuron extends from the basal surface of the epithelium, through an olfactory foramen in the cribriform plate of the ethmoid bone, and into the brain.

From Textbooks • Jun. 19, 2013

The ethmoid bone also contains the ethmoid air cells.

From Textbooks • Jun. 19, 2013

The upper portion of the nasal septum is formed by the perpendicular plate of the ethmoid bone and the lower portion is the vomer bone.

From Textbooks • Jun. 19, 2013

The needle had not entered the brain, but the ethmoid was very much injured.

From A Treatise on Sheep: The Best Means for their Improvement, General Management, and the Treatment of their Diseases. by Blacklock, Ambrose