Definition of Oxygen 1. A nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust Noun Synonyms for word "oxygen" Semanticaly linked words with "oxygen" Hyponims for word "oxygen" Lexical Analysis for "oxygen" oxygenate impregnate, combine, or supply with oxygen oxygenize impregnate, combine, or supply with oxygen dehydrogenate with oxygen etymology alkargen etymology dioxygen etymology nonoxygen etymology octaoxygen etymology organooxygen etymology oxygenate etymology oxygenic etymology oxygenlike etymology radiooxygen etymology trioxygen etymology oksiġin [Maltese] etymology oksigen etymology اوکسيݢن etymologically related BSCCO etymologically related Entonox etymologically related hydroxy- etymologically related hydroxyl etymologically related oxide etymologically related oxo etymologically related oxo- etymologically related oxy etymologically related oxy- etymological origin of oxygène [French] is derived from dioxygen is derived from gox is derived from heliox is derived from liquid oxygen is derived from lox is derived from nitrox is derived from nox is derived from oxo- is derived from oxy- is derived from oxygen bar is derived from oxygen bottle is derived from oxygen cylinder is derived from oxygen debt is derived from oxygen deficit is derived from oxygen demand is derived from oxygen depletion is derived from oxygen difluoride is derived from oxygen fluoride is derived from oxygen gas is derived from oxygen lance is derived from oxygen mask is derived from oxygen tent is derived from oxygen therapy is derived from oxygen-16 is derived from oxygen-17 is derived from oxygen-18 is derived from oxygenise is derived from oxygenize is derived from oxygenless is derived from oxygenous is derived from oxygens is derived from singlet oxygen is derived from tetraoxygen is derived from triplet oxygen