Eth"moid (?) n. (Anat.) The
ethmoid bone.
{ Eth"moid (?), Eth*moid"al (?), }
a. [Gr. ? like a sieve; ? sieve + ? 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.