Definition of molecular sieve in English:

molecular sieve

Line breaks: mo¦lecu|lar sieve

noun

  • A crystalline substance (especially a zeolite) with pores of molecular dimensions which permit the passage of molecules below a certain size.
    More example sentences
    • Zeolite molecular sieves can also segregate molecules of the same size but different electrical characteristics.
    • Since DNA molecules have much higher molecular weights than proteins, the molecular sieve used in electrophoresis of DNA must be different as well.
    • They have anchored bimetallic catalysts to the insides of such molecular sieves and have found that they can selectively hydrogenate cyclic polyenes.

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