Medical Definition of ethmoid bone
: a light spongy cubical bone of the skull that is made up of thin plates and forms much of the walls of the nasal cavity and part of those of the orbits
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“Ethmoid bone.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/ethmoid%20bone. Accessed 26 Sep. 2021.
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