molecular sieve

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Related to Molsieve: carbon molecular sieve

molecular sieve

[mə′lek·yə·lər ′siv]
(chemistry)
A naturally occurring or synthetic zeolite characterized by the ability to undergo dehydration with little or no change in crystal structure, thereby offering a very high surface area for adsorption of foreign molecules.

molecular sieve

An adsorbent composed of porous aluminosilicates with pores of uniform molecular dimensions which will selectively absorb molecules of the substance to be gathered.