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ethmoidal air cells

3 ENTRIES FOUND:
  1. ethmoidal air cells (noun plural)
  2. packed red blood cells (noun plural)
  3. cell (noun)

ethmoidal air cells

noun pl

Definition of ETHMOIDAL AIR CELLS

: 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