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单词 polymer
释义

Definition of polymer in English:

polymer

noun ˈpɒlɪməˈpɑləmər
Chemistry
  • A substance which has a molecular structure built up chiefly or completely from a large number of similar units bonded together, e.g. many synthetic organic materials used as plastics and resins.

    Example sentencesExamples
    • This is usually dextrose, but amino acids and glucose polymers can also be used.
    • High molecular weight polymers can have viscosity values in the millions of centipoise range.
    • The ability of living organisms to define the molecular composition of a polymer with complete accuracy is an enviable one.
    • Gels in the laboratory such as silica gel and some polymers have been studied and exploited for years.
    • Nucleic acids are also polymers, composed of repeating units called nucleotides.

Derivatives

  • polymeric

  • adjective pɒlɪˈmɛrɪkˌpɑliˈmɛrɪk
    Chemistry
    • The oil droplets contain a molecular metal oxide precursor, which polymerises on contact with water forming a polymeric metal oxide coating at the oil-water interface.
      Example sentencesExamples
      • Quill has already identified several ionic liquids in which a wide range of inorganic, organic and polymeric materials are highly soluble, making them prime candidates for small reactor volumes.
      • Polyphosphates are a group of phosphates that are created from polymeric chemical compounds.
      • So, it seems, the Earth's primordial soup was primed with the monomers for making the polymeric components of primitive life.
      • Latex emulsions are made up of polymeric materials suspended in an aqueous solvent by a surfactant.
  • polymerism

  • noun
    Chemistry

Origin

Mid 19th century: from German, from Greek polumeros 'having many parts', from polu- 'many' + meros 'a share'.

 
 

Definition of polymer in US English:

polymer

nounˈpɑləmərˈpäləmər
Chemistry
  • A substance that has a molecular structure consisting chiefly or entirely of a large number of similar units bonded together, e.g., many synthetic organic materials used as plastics and resins.

    Example sentencesExamples
    • The ability of living organisms to define the molecular composition of a polymer with complete accuracy is an enviable one.
    • This is usually dextrose, but amino acids and glucose polymers can also be used.
    • High molecular weight polymers can have viscosity values in the millions of centipoise range.
    • Gels in the laboratory such as silica gel and some polymers have been studied and exploited for years.
    • Nucleic acids are also polymers, composed of repeating units called nucleotides.

Origin

Mid 19th century: from German, from Greek polumeros ‘having many parts’, from polu- ‘many’ + meros ‘a share’.

 
 
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更新时间:2024/12/26 1:16:33