Meaning of Boyle's law

Boyle's' law'

Pronunciation: [key]
— Thermodynam. Thermodynam.
  1. the principle that, for relatively low pressures, the pressure of an ideal gas kept at constant temperature varies inversely with the volume of the gas. Also calledCf. Gay-Lussac's law.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.