[ad-sawrb, -zawrb]
verb (used with object) Physical Chemistry.
to gather (a gas, liquid, or dissolved substance) on a surface in a condensed layer: Charcoal will adsorb gases.

1880–85; ad- + (ab)sorb

adsorbable, adjective
adsorbability, noun
adsorbent, adjective, noun
adsorption [ad-sawrp-shuhn, -zawrp-] , noun
adsorptive, adjective
adsorptively, adverb

absorb, adsorb. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
adsorb (ədˈsɔːb, -ˈzɔːb)
Compare absorb to undergo or cause to undergo a process in which a substance, usually a gas, accumulates on the surface of a solid forming a thin film, often only one molecule thick: to adsorb hydrogen on nickel; oxygen adsorbs on tungsten
[C19: ad- + -sorb as in absorb]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

1882 (in adsorbing), trans. (intrans. use attested from 1919), back-formation from adsorption (1882), coined in Eng. from ad- + -sorption, abstracted from absorption (see absorb).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

adsorb ad·sorb (ād-sôrb', -zôrb')
v. ad·sorbed, ad·sorb·ing, ad·sorbs
To take up by adsorption.

adsorption ad·sorp·tion (ād-sôrp'shən, -zôrp'-)
The property of a solid or liquid to attract and hold to its surface a gas, liquid, solute, or suspension.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
adsorption   (ād-sôrp'shən)  Pronunciation Key 

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The process by which molecules of a substance, such as a gas or a liquid, collect on the surface of another substance, such as a solid. The molecules are attracted to the surface but do not enter the solid's minute spaces as in absorption. Some drinking water filters consist of carbon cartridges that adsorb contaminants. Compare absorption.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

adsorption definition

The assimilation of a gas, liquid, or dissolved substance by the surface of a solid.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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