ethmoid
ˈɛθmɔɪd
noun
a square bone at the root of the nose, forming part of the cranium, and having many perforations through which the olfactory nerves pass to the nose.
ossification in the ethmoid region
noun
a square bone at the root of the nose, forming part of the cranium, and having many perforations through which the olfactory nerves pass to the nose.
ossification in the ethmoid region