Normoxia is a medical term that refers to a state of normal or adequate oxygen levels in the body. It is often used to describe the standard condition of respiration for human beings. There are several synonyms for the word normoxia that can be used in medical literature or conversations. These include "normoxemia," which refers specifically to normal oxygen levels in the blood, "normoxic," which describes the state of being in a state of normoxia, and "eupnea," which is a more general term for normal, unlabored breathing. Other related terms include "hyperoxia" for high oxygen levels and "hypoxia" for low oxygen levels.