What does nicu stand for and what types of babies go in there

Hi so what does nicu even stand for and mean well here is what it means its neonatal intensive care unit. This is a place where premature babies, full term babies and babies with severe medical problems go to. As in my introduction my son was born when I was only 34 weeks pregnant so he was a premature baby. He had miner issues that kept him there for 2 weeks. Some. Babies stay in the nicu for longer amount of time