Extra oxygen Synonyms

Definitions for Extra


  • (adjective) being over what is needed
  • (adverb) to a great degree
  • (noun) an interchangeable part or piece of equipment that is kept on hand for replacement of an original

Definitions for Oxygen


  • (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