Pronunciation key

( ad-sôrpshən )
( ad-zôrpshən )



[L. ad- to; sorbere to suck in; < adsorb after absorption].

  1. Adsorbing or being adsorbed; adhesion of the molecules of a gas, liquid or dissolved substance to a surface.
  2. Adhesion to a solid, resulting in a greater concentration of the substance.
  3. A surface phenomenon exhibited by solids which consists in the adhesion, in an extremely thin layer, of molecules of gases, liquids and dissolved substances with which they come into contact.


  • Webster's New World Dictionary of the American Language (College Edition) ©1955
  • Biology of Plants, Fourth Edition, Worth Publishers Inc., Stanford University, Peter H. Raven and Helena Curtis, ©1971
  • Handbook of Chemistry, Norbert A. Lange, Ph.D. and Gordon M. Forker, B.S. in Chem. Eng. ©1946
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