Definition of oxygen :
1. A colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Symbol O. Atomic weight 15. 96.
2. Chlorine used in bleaching.
air (part of speech: noun)
gas (part of speech: noun)
atmosphere, butane, natural gas, ethane, chlorine, fume, ammonia, helium, hydrogen, nitrogen, xenon, laughing gas, carbon monoxide, nerve gas, methane, ether, tear gas, carbon dioxide, miasma, neon, ozone, rarefaction, vapor, mustard gas, acetylene, gas, argon
element (part of speech: noun)
rhenium, zinc, osmium, indium, thallium, astatine, antimony, fluorine, nobelium, cerium, phosphorus, lead, sulfur, yttrium, americium, tungsten, europium, tellurium, erbium, rhodium, neodymium, boron, iridium, magnesium, chromium, manganese, einsteinium, platinum, strontium, element, cadmium, fermium, bismuth, mendelevium, bromine, tantalum, plutonium, gallium, uranium, titanium, ruthenium, lanthanum, cesium, palladium, gadolinium, holmium, cobalt, curium, iron, promethium, aluminum, hafnium, molybdenum, nickel, polonium, terbium, sodium, copper, praseodymium, krypton, mercury, niobium, technetium, berkelium, calcium, selenium, radon, germanium, thorium, potassium, carbon, radium, scandium, lithium, samarium, lutetium, silver, beryllium, californium, dysprosium, gold, zirconium, francium, tin, barium, protactinium, silicon, arsenic, vanadium, ytterbium, actinium, thulium, rubidium, neptunium, iodine
- Could the tenth part of the air present be oxygen? - "Weighed and Wanting", George MacDonald.
- Carl's hand, infinitely gentle, on his chest, bringing up the soft blankets, and his good clean oxygen dwindling, dwindling- Carl! - "Martyr", Alan Edward Nourse.
- Yes, sir, I'm going to slip one over on him that he'll remember even when they begin giving him the oxygen. - "Fore!", Charles Emmett Van Loan.