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 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

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

From Textbooks • Jun. 19, 2013

Although classified with the brain-case bones, the ethmoid bone also contributes to the nasal septum and the walls of the nasal cavity and orbit.

From Textbooks • Jun. 19, 2013

When compound, there may be bleeding from the pharynx or nose from tearing of the periosteum and mucous membrane related to the basi-sphenoid and ethmoid respectively.

From Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. by Miles, Alexander