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 eight cranial bones are the frontal bone, two parietal bones, two temporal bones, occipital bone, sphenoid bone, and the ethmoid bone.

From Textbooks • Jun. 9, 2022

Within the nasal cavity, the perpendicular plate of the ethmoid bone forms the upper portion of the nasal septum.

From Textbooks • Jun. 19, 2013

The ethmoid air cells are multiple small spaces located in the right and left sides of the ethmoid bone, between the medial wall of the orbit and lateral wall of the upper nasal cavity.

From Textbooks • Jun. 19, 2013

The lateral portions of the ethmoid bone are located between the orbit and upper nasal cavity, and thus form the lateral nasal cavity wall and a portion of the medial orbit wall.

From Textbooks • Jun. 19, 2013

Long, wide anteriorly, narrowing posteriorly; attached to ethmoid.

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