Definitions for atmospheric pressure
at·mo·spher·ic pres·sure

Princeton's WordNetRate this definition:0.0 / 0 votes

1. atmospheric pressure, air pressure, pressurenoun

   the pressure exerted by the atmosphere

WiktionaryRate this definition:0.0 / 0 votes

1. atmospheric pressurenoun

   The pressure caused by the weight of the atmosphere above an area.

WikipediaRate this definition:0.0 / 0 votes

1. Atmospheric pressure

   Atmospheric pressure, also known as barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa), which is equivalent to 1013.25 millibars, 760 mm Hg, 29.9212 inches Hg, or 14.696 psi. The atm unit is roughly equivalent to the mean sea-level atmospheric pressure on Earth; that is, the Earth's atmospheric pressure at sea level is approximately 1 atm. In most circumstances, atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point. As elevation increases, there is less overlying atmospheric mass, so atmospheric pressure decreases with increasing elevation. Because the atmosphere is thin relative to the Earth's radius—especially the dense atmospheric layer at low altitudes—the Earth's gravitational acceleration as a function of altitude can be approximated as constant and contributes little to this fall-off. Pressure measures force per unit area, with SI units of pascals (1 pascal = 1 newton per square metre, 1 N/m2). On average, a column of air with a cross-sectional area of 1 square centimetre (cm2), measured from the mean (average) sea level to the top of Earth's atmosphere, has a mass of about 1.03 kilogram and exerts a force or "weight" of about 10.1 newtons, resulting in a pressure of 10.1 N/cm2 or 101 kN/m2 (101 kilopascals, kPa). A column of air with a cross-sectional area of 1 in2 would have a weight of about 14.7 lbf, resulting in a pressure of 14.7 lbf/in2.

ChatGPTRate this definition:0.0 / 0 votes

1. atmospheric pressure

   Atmospheric pressure is the force per unit area exerted against a surface by the weight of air above that surface in the atmosphere of Earth. It is determined by the atmospheric mass above that surface and decreases with increasing altitude. It is measured in units of force per unit area, typically in pascal units (Pa) or atmospheric units (atm).

WikidataRate this definition:0.0 / 0 votes

1. Atmospheric pressure

   Atmospheric pressure is the force per unit area exerted on a surface by the weight of air above that surface in the atmosphere of Earth. In most circumstances atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point. On a given plane, low-pressure areas have less atmospheric mass above their location, whereas high-pressure areas have more atmospheric mass above their location. Likewise, as elevation increases, there is less overlying atmospheric mass, so that atmospheric pressure decreases with increasing elevation. On average, a column of air one square centimeter in cross-section, measured from sea level to the top of the atmosphere, has a mass of about 1.03 kg and weight of about 10.1 N. Over the area of your body, there is about 1,000 kg of air; this is approximately the same as having a small car press down on you.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Atmospheric Pressure

   The pressure at any point in an atmosphere due solely to the weight of the atmospheric gases above the point concerned.

Matched Categories

1. • Gas Pressure

How to pronounce atmospheric pressure?

1. Alex

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How to say atmospheric pressure in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of atmospheric pressure in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of atmospheric pressure in Pythagorean Numerology is: 5

Examples of atmospheric pressure in a Sentence

1. Andrew Cole:

   What the study found was when Pluto is farthest away from the Sun, and during its Winter in the Northern Hemisphere, nitrogen freezes out of the atmosphere, the atmospheric pressure has tripled over the past three decades, but as the planet orbits, our modelling showed that most of the atmosphere would condense out to almost nothing left.

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=atmospheric pressure
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Atmospheric_Pressure
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Atmospheric_Pressure
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=atmospheric pressure