(physics, dated) The standard atmospheric pressure used in certain physical measurements and calculations; conventionally, that pressure under which the barometer stands at 760 millimeters, at a temperature of 0° Centigrade, at the level of the sea, and in the latitude of Paris.

plural of atmo / (sound production) Clipping of atmosphere.

The gases surrounding the Earth or any astronomical body. / The air in a particular place.

Pressure waves in the atmosphere similar to the tides of the ocean, produced by the gravitational influence of the moon and by thermal expansion and contraction.

Of, relating to, produced by, or coming from the atmosphere. / (painting) Translucent or hazy. / Evoking a particular emotional or aesthetic quality.

(physics, meteorology) The pressure caused by the weight of the atmosphere above an area.

(chemistry, geology) in the Goldschmidt classification, a gaseous element that concentrates in the atmosphere.

radio interference caused by pulses of electromagnetic radiation in the atmosphere as the result of lightning and other events (both natural and man-made)

An instrument that measures the rate of evaporation of a liquid.

In an atmospheric manner. / With regard to the atmosphere.