1. oxygen

noun. (ˈɑːksədʒən, ˈɑːksɪdʒən) 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.
Synonyms
O LOX ozone chemical element gas air H2O atomic number 8 water element liquid oxygen
Antonyms
understate unleaded gasoline leaded gasoline defend wet
Etymology
oxygen (English)
oxygène (French)
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