Eth"moid (?), Eth*moid"al (?), a. [Gr. like a sieve; sieve + from: cf. F. ethmoide, ethmoidal.] Anat. (a)
Like a sieve; cribriform.
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.
© Webster 1913.