Definition of Perinatal
Perinatal: Pertaining to the period immediately before and after birth. The perinatal period is defined in diverse ways. Depending on the definition, it starts at the 20th to 28th week of gestation and ends 1 to 4 weeks after birth.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 5/13/2016
Parenting and Pregnancy
Get tips for baby and you.