Relating to, designating, or occurring in the period between the end of the neonatal period (four weeks after birth) and the end of the first year of life.
Origin
1940s; earliest use found in Quarterly Review of Biology.
Definition of postneonatal in US English:
postneonatal
adjective
Medicine
Relating to, designating, or occurring in the period between the end of the neonatal period (four weeks after birth) and the end of the first year of life.
Origin
1940s; earliest use found in Quarterly Review of Biology.