Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To take up by adsorption.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To accumulate on a surface, by adsorption

from the GNU version of the Collaborative International Dictionary of English

  • transitive v. to attract and bind (molecules of a substance in a fluid) so as to form a thin layer on the surface, by non-electrostatic forces; to bind by adsorption. Distinguished from absorb, in which the foreign substance penetrates the body of the absorbing material.

from The Century Dictionary and Cyclopedia

  • To gather (a gas or liquid) on the surface in a condensed layer. Thus solids, such as glass, gather gases and liquids with which they are in contact.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. accumulate (liquids or gases) on the surface

Etymologies

ad- + Latin sorbēre, to suck.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From French, from Latin ad- ("to"), + sorbere ("suck in"). (Wiktionary)

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