neonatal

neo·na·tal

adj \ˌnē-ō-ˈnāt-^əl\

Definition of NEONATAL

: of, relating to, or affecting the newborn and especially the human infant during the first month after birth <neonatal jaundice> <neonatal death>—compare prenatal, intranatal, postnatal

—neo·na·tal·ly \-^əl-ē\ adverb