a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely

a fluorocarbon with chlorine; formerly used as a refrigerant and as a propellant in aerosol cans

a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis

a fluorocarbon emitted as a by-product of industrial manufacturing

a powerful greenhouse gas emitted during the production of aluminum

a colorless gas that is soluble in alcohol and ether; a powerful greenhouse gas widely used in the electrical utility industry