noun
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
• Hypernyms: ↑chemical element, ↑element, ↑gas
• Hyponyms: ↑liquid oxygen, ↑LOX
Useful english dictionary. 2012.