Etymology
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adsorb (v.)

1882, transitive (intransitive use attested from 1919), back-formation from adsorption "condensation of gases on the surfaces of solids" (1882), coined in German from ad- + -sorption, abstracted from absorption and representing Latin sorbere "to suck" (see absorb). Related: Adsorbent; adsorption.

updated on November 03, 2016

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Definitions of adsorb from WordNet

adsorb (v.)
accumulate (liquids or gases) on the surface;
From wordnet.princeton.edu, not affiliated with etymonline.