Hypertext Webster Gateway: "ethmoidal"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Ethmoid \Eth"moid\, Ethmoidal \Eth*moid"al\, a. [Gr. ? like a
sieve; ? sieve + ? from: cf. F. ethmo["i]de, ethmo["i]dal.]
(Anat.)
(a) Like a sieve; cribriform.
(b) Pertaining to, or in the region of, the ethmoid bone.
{Ethmoid bone} (Anat.), a bone of complicated structure
through which the olfactory nerves pass out of the cranium
and over which they are largely distributed.
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