I. (ˈ)ek|t+_- noun
Etymology: ect- + ethmoid, n.
: either of two lateral parts of the ethmoid bone lying on either side of the mesethmoid and forming part of the anterior wall of the orbit
II. adjective
also ect·ethmoidal (|)ek|t+_- ; also ec·to·ethmoid |ektō+
: lateral or external to the ethmoid