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

conveying air; as the bronchial tubes

of or relating to or using air (or a similar gas)

air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure

a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere

a colorless element that is one of the six inert gasses; occurs in trace amounts in air

a colorless odorless gaseous element that give a red glow in a vacuum tube; one of the six inert gasses; occurs in the air in small amounts

a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues

aerate (sewage) so as to favor the growth of organisms that decompose organic matter

turn into gas

expose to fresh air

the air that is inhaled and exhaled in respiration

air that has been heated and tends to rise

air in a liquid state

air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure

a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere

a colorless element that is one of the six inert gasses; occurs in trace amounts in air

a colorless odorless gaseous element that give a red glow in a vacuum tube; one of the six inert gasses; occurs in the air in small amounts

a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues