neonatal mortality(n = noun.time) neonatal mortality rate - the death rate during the first 28 days of life;
is a kind of death rate, deathrate, fatality rate, mortality, mortality rate

infant mortality, infant mortality rate, mortality, mortality rate, mortality table, neonatal, neonatal death, neonatal hyperbilirubinemia, neonatal intensive care unit, neonatal mortality rate, neonatal period