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molecular sieve

noun, Chemistry
a compound with molecule-size pores, as some sodium aluminum silicates, that chemically locks molecules in them: used in purification and separation processes.
Origin of molecular sieve
1925-30 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for molecular sieve
  • Recently, a molecular sieve, desiccant-based heat wheel technology has been developed that actually improves indoor air quality.
  • To remove water from the desulfurized naphtha, the hydrocarbon feed is typically dried using molecular sieve.
  • The dilute acid was routinely used to leach alumina and molecular sieve beads.
  • Activated charcoal canister located in the molecular sieve unit.
British Dictionary definitions for molecular sieve

molecular sieve

(chem) a material that can absorb large amounts of certain compounds while not absorbing others and is thus suitable for use in separating mixtures
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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