AIR PRESSURE

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does air pressure mean? 

• AIR PRESSURE (noun)
  The noun AIR PRESSURE has 1 sense:

1. the pressure exerted by the atmosphere

  Familiarity information: AIR PRESSURE used as a noun is very rare.

 Dictionary entry details 

• AIR PRESSURE (noun)

Sense 1

Meaning:

The pressure exerted by the atmosphere

Classified under:

Nouns denoting natural phenomena

Synonyms:

air pressure; atmospheric pressure; pressure

Hypernyms ("air pressure" is a kind of...):

gas pressure (the pressure exerted by a gas)

Hyponyms (each of the following is a kind of "air pressure"):

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)

sea-level pressure (the atmospheric pressure reduced by a formula to the pressure at sea level)

 Context examples 

Testing the devices response to variations in air pressure for detecting sound with frequencies greater than upper limit of human hearing (> 20 kHz).

(Device Ultrasonic Sound Testing Evaluation Method, Food and Drug Administration)

The movement of the tympanic membrane in response to air pressure changes in the external ear facilitates the transmission of sound energy by causing vibration of the ossicular chain.

(Murine Tympanic Membrane, NCI Thesaurus)

Testing the device's response to variations in air pressure for detecting any unwanted or unintentional sound.

(Device Acoustic Noise Testing Evaluation Method, Food and Drug Administration)

Testing the device for its response to variations in air pressure produced by the vibration of an object.

(Device Acoustic Energy Testing Evaluation Method, Food and Drug Administration)

Liquid water can't last in the thin air of Mars; with so little air pressure, it evaporates from a solid to a gas when exposed to the atmosphere.

(NASA's Treasure Map for Water Ice on Mars, NASA)

As it dove through the gap, Cassini came within about 1,900 miles (3,000 kilometers) of Saturn's cloud tops (where the air pressure is 1 bar — comparable to the atmospheric pressure of Earth at sea level) and within about 200 miles (300 kilometers) of the innermost visible edge of the rings.

(Cassini Spacecraft Dives Between Saturn and Its Rings, NASA)

Cassini will enter Saturn's atmosphere approximately one minute earlier, at an altitude of about 1,190 miles (1,915 kilometers) above the planet's estimated cloud tops (the altitude where the air pressure is 1-bar, equivalent to sea level on Earth).

(Cassini Spacecraft Makes Its Final Approach to Saturn, NASA)