Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.

Definition of First stage of labor

Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026

First stage of labor: The part of labor when the cervix dilates fully, to approximately 10 centimeters in diameter. Also known as the stage of dilatation.

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