Labor, Obstetric

**Definition:** The repetitive uterine contraction during childbirth which is associated with the progressive dilation of the uterine cervix (CERVIX UTERI). Successful labor results in the expulsion of the FETUS and PLACENTA. Obstetric labor can be spontaneous or induced (LABOR, INDUCED).

**Tree numbers:** - G08.686.784.769.326

**Synonyms:** - Obstetric Labor