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Visible watery vapor suspended in the atmosphere, at or near the surface of the earth; fog.

mist; obscured by, or overspread with, mist; as, misty weather; misty mountains; a misty atmosphere.

Moderately wet; damp; humid; not dry; as, a moist atmosphere or air. "Moist eyes." Shak.

A colorless nonmetallic element, tasteless and odorless, comprising four fifths of the atmosphere by volume. It is chemically very inert in the free state, and as such is incapable of supporting life (hence the name azote still used by French chemists); but it forms many important compounds, as ammonia, nitric acid, th…

Capable of living without atmospheric oxygen; anaërobiotic.

ischarging the steam from the cylinder at a pressure nearly equal to or above that of the atmosphere and not into a condenser.

Of or pertaining to a hospital; as, nosocomial atmosphere. Dunglison.

nse by which the impressions made on the olfactory organs by the odorous particles in the atmosphere are perceived.

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.

An instrument for ascertaining the amount of ozone in the atmosphere, or in any gaseous mixture. Faraday.

A lightning conductor erected, as in a vineyard, for drawing off the electricity in the atmosphere in order to prevent hailstorms. [France] Knight.

A high, bleak plateau or district, with stunted trees, and cold, damp atmosphere, as in the Andes, in South America.

, and of the physical movements or changes on the earth's surface, as the currents of the atmosphere and ocean, the secular variations in heat, moisture, magnetism, etc.; physical geography.

compressed air. -- Pneumatic pile, a tubular pile or cylinder of large diameter sunk by atmospheric pressure. -- Pneumatic pump, an air-exhausting or forcing pump. -- Pneumatic railway. See Atmospheric railway, under Atmospheric. -- Pneumatic syringe, a stout tube closed at one end, and provided with a piston, for…

Capable of holding up or carrying; as, the portative force of a magnet, of atmospheric pressure, or of capillarity.

st, distributed over a surface, often estimated with reference to the upon a unit's area. Atmospheric pressure, Center of pressure, etc. See under Atmospheric, Center, etc. -- Back pressure (Steam engine), pressure which resists the motion of the piston, as the pressure of exhaust steam which does not find free outlet…

An instrument for measuring the tension of the aqueous vapor in the atmosphere, being essentially a wet and dry bulb hygrometer.

A device, with valves, for raising water by steam, partly by atmospheric pressure, and partly by the direct action of the steam on the water, without the intervention of a piston; -- also called vacuum pump.

rized by wide separation of parts; of loose texture; not thick or dense; thin; as, a rare atmosphere at high elevations. Water is nineteen times lighter, and by consequence nineteen times rarer, than gold. Sir I. Newton.

n of a heavenly body from which it emanates, arising from its passage through the earth's atmosphere; -- hence distinguished as atmospheric refraction, or astronomical refraction.