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Definition of First stage of labor

First stage of labor: The part of labor when the cervix dilates fully (to 10 centimeters). The first stage of labor is also called the stage of dilatation.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=3466
Last Editorial Review: 3/26/1998 2:25:00 PM


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