odontoid

 
Pronunciation: /ə(ʊ)ˈdɒntɔɪd/
(also odontoid process)

noun

Anatomy
  • a projection from the second cervical vertebra (axis) on which the first (atlas) can pivot: [as modifier]: the anterior odontoid joint

Origin:

early 19th century: from Greek odontoeidēs, from odous, odont- 'tooth' + eidos 'form'