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.
Neonatal abstinence syndrome is a condition that some babies experience when withdrawing from certain drugs that his mother has taken during pregnancy.When a woman is pregnant and takes one of these drugs, her unborn baby can become accustomed to the drug while in the uterus.eonatal abstinence syndrome is a condition that some babies experience when withdrawing from certain drugs that his mother has taken during pregnancy.