ali·eth·moid I. \|ālē|-, |al-\adjective orali·eth·moi·dal\| ̷ ̷ ̷ ̷| ̷ ̷| ̷ ̷ ̷ ̷\ Etymology:ali- + ethmoid, ethmoidal : relating to or indicating the lateral expansions of the ethmoid bone or cartilage of certain birds II. noun oraliethmoidal\“\ (-s) : an aliethmoid bone or cartilage