molecular sieve
noun Date: 1869 a crystalline substance (as a zeolite) characterized by uniformly sized pores of molecular dimension that can adsorb small molecules and is used especially in separations

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • molecular sieve — n. any of a class of zeolites or similar materials, natural or synthetic, having small, precisely uniform, pores in their crystal lattices that can absorb molecules small enough to pass through the pores: used as for separating or drying gases… …   English World dictionary

  • Molecular sieve — A molecular sieve inside an antibiotics container (contents removed). See below for size comparison image …   Wikipedia

  • molecular sieve — Chem. a compound with molecule size pores, as some sodium aluminum silicates, that chemically locks molecules in them: used in purification and separation processes. [1925 30] * * * ▪ chemistry       a porous solid, usually a synthetic or a… …   Universalium

  • molecular sieve — molec′ular sieve′ n. chem. a compound with molecule size pores, as some sodium aluminum silicates, that chemically locks molecules in them: used in purification and separation processes • Etymology: 1925–30 …   From formal English to slang

  • molecular sieve — a crystalline substance having uniform pores of molecular size that adsorbs smaller but not larger molecules; used in chemical separation …   Medical dictionary

  • molecular sieve — noun : a crystalline substance (as a zeolite) that is characterized by pores of molecular dimensions and uniform size formed by heating to drive off the water of hydration and that by its ability to adsorb small molecules but not large ones can… …   Useful english dictionary

  • molecular sieve — noun a material, usually a zeolite silicate mineral, having pores of a precise and uniform size, that can be used to separate molecules of different shape and size …   Wiktionary

  • molecular sieve — noun a zeolite or other crystalline substance with pores large enough for small molecules to pass through …   English new terms dictionary

  • molecular sieve chromatography — siv n GEL FILTRATION …   Medical dictionary

  • molecular-sieve chromatography — molekulinių sietų chromatografija statusas T sritis Standartizacija ir metrologija apibrėžtis Chromatografija, pagrįsta makromolekulių išsiskirstymu pagal jų matmenis ir pavidalą kolonėlėje su molekuliniais sietais. atitikmenys: angl. molecular… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

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