ethmoidal air cells
noun plural
: the cavities in the lateral masses of the ethmoid bone that are partly completed by adjoining bones and communicate with the nasal cavity
called also ethmoidal cells
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“Ethmoidal air cells.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/ethmoidal%20air%20cells. Accessed 29 Nov. 2024.
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