partial pressure: Meaning and Definition of

par'tial pres'sure

Pronunciation: [key]
— Physics, Chem. Physics,Chem.
  1. the pressure that a gas in a mixture of gases would exert if it occupied the same volume as the mixture at the same temperature. Cf.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.