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
Frequently asked questions for oxygen:
How many solutions are there for the crossword clue "OXYGEN"?
There are 50 solutions. The longest is PERIODIC TABLE GROUP with 18 letters, and the shortest is AIR with 3 letters.
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