eth·​moid ˈeth-ˌmȯid How to pronounce ethmoid (audio)
: a light spongy cubical bone forming much of the walls of the nasal cavity and part of those of the orbits
ethmoid adjective
or ethmoidal

Examples of ethmoid in a Sentence

Recent Examples on the Web The study mapped this complex network by CT-scanning the cadaver of a domestic short hair cat, revealing the intricate folds and passageways winding through the cat’s ethmoid bone. Matt Hrodey, Discover Magazine, 8 July 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ethmoid.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


French ethmoïde, from Greek ēthmoeidēs, literally, like a strainer, from ēthmos strainer

First Known Use

1842, in the meaning defined above

Time Traveler
The first known use of ethmoid was in 1842

Dictionary Entries Near ethmoid

Cite this Entry

“Ethmoid.” Dictionary, Merriam-Webster, Accessed 20 May. 2024.

Medical Definition


1 of 2 adjective
eth·​moid ˈeth-ˌmȯid How to pronounce ethmoid (audio)
variants or ethmoidal
: of, relating to, adjoining, or being one or more bones of the walls and septum of the nasal cavity


2 of 2 noun
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!