air at Medical-dictionary.cc

What does the word air mean?

The atmosphere, a simple non- chemical mixture of oxygen, 1 volume, and nitrogen, 4 volumes, with varying proportions of carbon dioxide, vapor of water, argon, ammonia, nitric acid, and organic matter.
is an invisible, transparent, inodorous, insipid, ponderable, compressible, and elastic fluid, which, under the form of the atmosphere, surrounds the earth to the height of 15 or 16 leagues Air is essentially composed of two gases, oxygen and nitrogen, in the proportion of 20 of the former to 80 of the latter. Oxygen is the vital portion, but the nitrogen is necessary to dilute it. Air also contains a small portion of carbonic acid gas, and has always floating in it aqueous vapour, different terrestrial emanations, etc. Its effects upon the human body vary according to its greater or less density, temperature, moisture, etc.; hence, change of air is found extremely serviceable in the prevention and cure of certain morbid conditions. See Climate, and Respiration.

Usage examples for air

It seemed that they had come to her from the air, that some one else had spoken them. – The Short Cut by Jackson Gregory
Just to clear the air, I'll show it to you. – K by Mary Roberts Rinehart
They say it will let light and air into the house. – The Privet Hedge by J. E. Buckrose

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What does the word air mean?

Usage examples for air