Also found in: Dictionary, Thesaurus, Legal, Acronyms, Encyclopedia, Wikipedia.
mortality around the time of birth, conventionally limited to the period from 28 weeks' gestation to 1 week postnatal.
the statistical rate of fetal and infant death, including stillbirth, from 28 weeks of gestation to the end of the neonatal period of 4 weeks after birth. Perinatal mortality is usually expressed as the number of deaths in a given period per 1000 live births in a specific geographic area or program.
per·i·na·tal mor·tal·i·ty(peri-nātăl mōr-tali-tē)
Death around the time of birth, conventionally limited to the period from 28 weeks' gestation to 1 week postnatally.
relating to the period shortly before and after birth; the actual time varies between species. The last 10 to 15% of the pregnancy before parturition to the end of a comparable period after birth would cover present usage of the term.
the percentage of animals in the danger period which die, as a ratio of the total number exposed.