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.

From Project Gutenberg

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.

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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.

From New York Times