Definition of odontoid in English:

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Pronunciation: /ˌōˈdän(t)oid/
(also odontoid process)


A toothlike projection from the second cervical vertebra on which the first vertebra pivots.
Example sentences
  • The axis possesses an ovate odontoid process for articulation with the preceding atlas.
  • One of the serious complications of RA result from involvement of the synovium around the odontoid process.
  • Some months ago a less than dramatic surfing accident left me with an odontoid fracture and an abrupt suspension of my life as a research paediatrician in the Gambia.


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

For editors and proofreaders

Syllabification: o·don·toid

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