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Definition of: ethmoid
(eth′moid) noun Anat.
A bone, cubical in man, composed of thin plates and situated at the base of the skull, behind the nose.
—adjective Of or pertaining to the ethmoid; sievelike. [<Gk. ēthmoeidēs <ēthmos sieve + eidos form]
—eth·moi′dal adjective
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