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 walls of the orbit are formed by contributions from seven bones: the frontal, zygomatic, maxillary, palatine, ethmoid, lacrimal, and sphenoid.

From Textbooks • Jun. 19, 2013

A small area of the ethmoid bone, consisting of the crista galli and cribriform plates, is located at the midline of this fossa.

From Textbooks • Jun. 19, 2013

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 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 nasals are only slightly pointed anteriorly, and posteriorly they bear short, blunt palatine processes and medial processes in contact with the lateral corners of the ethmoid.

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