partial pressure

noun Physics, Chemistry.

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.

Nearby words

  1. partial differentiation,
  2. partial eclipse,
  3. partial fraction,
  4. partial ophthalmoplegia,
  5. partial ordering,
  6. partial product,
  7. partial reinforcement,
  8. partial seizure,
  9. partial sum,
  10. partial tone

Compare Dalton's law.

Origin of partial pressure

First recorded in 1855–60 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for partial pressure

partial pressure


the pressure that a gas, in a mixture of gases, would exert if it alone occupied the whole volume occupied by the mixture
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

Medicine definitions for partial pressure

partial pressure


The pressure that one component of a mixture of gases would exert if it were alone in a container.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.