perfect gas

noun

Physics.

1. ideal gas.

perfect gas

noun

1. another name for ideal gas

Word History and Origins

Origin of perfect gas¹

First recorded in 1840–50

Example Sentences

Thomson's scale enables a perfect gas to be defined, and the deviations of the properties of ordinary gases from those of such a gas to be observed and measured.

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The relation between the temperature, pressure, and weight of steam is not quite proportional to the volume, because steam is not a perfect gas, and does not, therefore, strictly follow Mariotte’s law.

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Contracting, according to Lane's law, its temperature must rise until its density becomes such that it no longer behaves as a perfect gas.

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They are the cases of mixtures of perfect gases, and of very dilute solutions.

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Instead of behaving like a perfect gas, in which every quark goes its own way independent of the others, the plasma seemed to act like a liquid.

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