'Ethmoidal' definitions:
Definition of 'Ethmoidal'
From: GCIDE
- 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. [1913 Webster]
- 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. [1913 Webster]