atmospheric pressure

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atmospheric pressure

Pressure caused by the weight of the atmosphere. It has a mean value of one atmosphere at sea level but reduces with increasing altitude. Also called barometric pressure.

atmospheric pressure

(General Physics) the pressure exerted by the atmosphere at the earth's surface. It has an average value of 1 atmosphere

at′mospher′ic pres′sure

1. the pressure exerted by the earth's atmosphere at any given point.
2. a value of standard or normal atmospheric pressure, equivalent to the pressure exerted by a column of mercury 29.92 in. (760 mm) high, or 1013 millibars (101.3 kilopascals). Also called barometric pressure.

at·mos·pher·ic pressure

Pressure caused by the weight of the air. At sea level it has an average value of one atmosphere and gradually decreases as the altitude increases.
Did You Know? The atmosphere that blankets the Earth gently presses down on us, and the subtle variations in this atmospheric pressure greatly affect the weather. For example, forecasters often talk of low pressure bringing rain. In areas of low air pressure, the air is less dense and relatively warm, which causes it to rise. The expanding and rising air naturally cools and the water vapor in the air condenses, forming clouds and the drops that fall as rain. In high pressure regions, on the other hand, the air is dense and relatively cool, which causes it to sink. The water vapor in the sinking air does not condense, leaving the skies sunny and clear. So if you're trying to hit a home run, would you prefer a beautiful, sunny day or one in which it looks like rain? On the overcast day, the ball has less air to push aside on its way out of the ballpark, making it easier to hit a homer.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.atmospheric pressure - the pressure exerted by the atmosphereatmospheric pressure - the pressure exerted by the atmosphere
gas pressure - the pressure exerted by a gas
barometric pressure - atmospheric pressure as indicated by a barometer
compartment pressure - the air pressure maintained in an air-tight compartment (as in an aircraft)
overpressure - a transient air pressure greater than the surrounding atmospheric pressure; "the overpressure of the blast kills by lethal concussion"
sea-level pressure - the atmospheric pressure reduced by a formula to the pressure at sea level
References in periodicals archive ?
Have just seen Liverpool v Bournemouth is to be played on the same day as the Grand National need urgent meeting with @MerseyPolice they simply will not cope given the normal pressure of a Saturday.
30pm the same day as the Grand National… need urgent meeting with @MerseyPolice they simply will not cope given the normal pressure of a Saturday.
They also plan to make a bigger version of the device since the current device made would just fit in the palm of human's hand and also trying to develop a technology that would store large quantities of hydrogen at normal pressure and temperature.
Possibly evacuating normal pressure at any temperature; 7.
Not just the normal pressure that all football managers feel but the intense, scrutinised pressure which comes when things aren't going particularly well.
Her past medical history included hypertension and normal pressure hydrocephalus, and her vital signs were within normal limits.
In a special closed demonstration circuit representing a typical road we tried out DriveGuard tyres inflated to normal pressure on a Volkswagen Golf and then deflated to simulate loss of air through a puncture.
5 times the normal pressure of Earth allows for unprecedented science and exploration: Regular divers can only stay up to 30 minutes at that depth, yet aquanauts can perform EVAs for up to eight hours a day.
Asad Nisar said that SSGCL has provided 165 MMCFD (1050 BTU) which is very good quantity of gas with normal pressure to K-Electric.
It's normal pressure, big pressure, yes, but all the teams have pressure," said the Portuguese.
For large format lithium ion battery systems, the company offers a series of overpressure valves designed to maintain their seal during normal pressure variations due to the heating and cooling of the battery.
Other causes include vascular dementia, dementia with Lewy bodies, frontotemporal lobar degeneration, Parkinson's disease, Creutzfeldt-Jakob disease and normal pressure hydrocephalus.