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.

---

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

---

noun

1. the ethmoid bone

Other Word Forms

• postethmoid adjective

Etymology

Origin of ethmoid

1735–45; < Greek ēthmoeidḗs sievelike; -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 lateral aspects of the ethmoid bone contain multiple small spaces separated by very thin bony walls.

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

In specimens from the Caribbean lowlands the nasals are long, wide, and narrowly separated from the ethmoid; the anterior edge is just posterior to the nostril.

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