odontoid
/ɒˈdɒntɔɪd/(亦作odontoid process)
noun
- Anatomy a projection from the second cervical vertebra (axis) on which the first (atlas) can pivot【剖】（枢椎）齿突：
as modifier the anterior odontoid joint.前位齿突关节。
词源
early 19th cent.: from Greek odontoeidēs, from odous, odont- 'tooth' + eidos 'form'.