0 abbreviation for neonatal intensive care unit: the part of a hospital that provides continuous treatment for very young babies who are seriously ill or have been born too early:
She has been caring for babies at Sacred Heart's NICU for 30 years.
Babies as young as 24 weeks' gestation have been treated and survived in NICU.
As a NICU nurse, I can detach myself emotionally to a certain extent.
