| incompetent cervix | A cervix with the inability to remain closed throughout an entire pregnancy, a frequent cause of premature birth. (09 Oct 1997) |
|---|---|
| tooth cervix | The constricted part of the tooth at the junction of the crown and root or roots. It is often referred to as the cementoenamel junction (cej), the line at which the cementum covering the root of a tooth and the enamel of the tooth meet. (12 Dec 1998) |