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

It is divided at the midline by the crista galli and cribriform plates of the ethmoid bone.

From Textbooks • Jun. 19, 2013

The axon of an olfactory neuron extends from the basal surface of the epithelium, through an olfactory foramen in the cribriform plate of the ethmoid bone, and into the brain.

From Textbooks • Jun. 19, 2013

The ethmoid bone also forms the lateral walls of the upper nasal cavity.

From Textbooks • Jun. 19, 2013

The ethmoid is broad, curved downward laterally, and solidly sutured to the frontoparietal.

From A Review of the Frogs of the Hyla bistincta Group by Duellman, William E.