Water is a transparent and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms. Its chemical formula is H2O, meaning that its molecule contains one oxygen and two hydrogen atoms, that are connected by covalent bonds.
1. recently born; called also neonatal. 2. newborn infant. postmature newborn (post-term newborn) post-term infant. premature newborn (preterm newborn) preterm infant.
  A neonate is a newly-born baby, and neonatal is the adjective used to refer to anything (usually hospital-related) that is to do with newborn babies up to a few weeks of â¦ age.17 people found this useful. Don Dfoofnik.eonatologist cares for the baby after it was born and the parents took it home. The person that is the doctor the very first time it has a check up when it is a few days old. â¦ Compared to an OB, they super focus on the fetus.