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Webster 1913 Edition
Ethmoidal
{
Eth′moid
,Eth-moid′al
, }Adj.
[Gr. [GREEK] like a sieve; [GREEK] sieve + [GREEK] from: cf. F.
ethmoïde
, ethmoïdal
.] (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.