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equation of state

American  

noun

Physics.
  1. an equation relating the temperature, pressure, and volume of a given thermodynamic system.


equation of state British  

noun

  1. any equation that expresses the relationship between the temperature, pressure, and volume of a substance

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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With this precision, the group will be well placed to begin plotting out what is known as the neutron-star equation of state, which relates mass to radius or, equivalently, internal pressure to density.

From Nature • Mar. 3, 2020

A Chinese–European satellite called the enhanced X-ray Timing and Polarimetry mission, or eXTP, is expected to launch in 2027 and study both isolated and binary neutron stars to help determine their equation of state.

From Nature • Mar. 3, 2020

In the process, she realized that the landscape for neutron-star research — in particular, the question of the equation of state — should look very different by then.

From Nature • Mar. 3, 2020

In this case, the gas is called an ideal gas, in which case the relationship between the pressure, volume, and temperature is given by the equation of state called the ideal gas law.

From Textbooks • Aug. 12, 2015

The given equation of state cannot hold for such substances.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" by Various