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; see -oid

Example Sentences

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 middle concha and the superior conchae, which is the smallest, are both formed by the ethmoid bone.

From Textbooks • Jun. 19, 2013

Located just above the inferior concha is the middle nasal concha, which is part of the ethmoid bone.

From Textbooks • Jun. 19, 2013

The lateral aspects of the ethmoid bone contain multiple small spaces separated by very thin bony walls.

From Textbooks • Jun. 19, 2013

The tooth-bearing parts of the vomers are widely separated and at a slight angle to one another; the vomers terminate medially in two pointed processes on the ethmoid.

From Neotropical Hylid Frogs, Genus Smilisca by Duellman, William E.