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词汇 gadolinium
释义

Definition of gadolinium in English:

gadolinium

nounˌɡadəˈlɪnɪəmˌɡædəˈlɪniəm
mass noun
  • The chemical element of atomic number 64, a soft silvery-white metal of the lanthanide series.

    (化学元素)钆(符号: Gd

    Example sentencesExamples
    • For undergraduate chemistry it was required that one could recite the whole thing from memory, to know that iridium lies at the foot of cobalt, that europium is sandwiched between samarium and gadolinium.
    • In contrast, the prolonged increase in cytosolic calcium was greatly enhanced in the presence of gadolinium or lanthanum chloride.
    • It has been known since the late 1970s that paramagnetic metal ions such as gadolinium improve the MRI signal, but the toxicity of these uncomplexed metal ions has limited their use.
    • This is a major improvement over gadolinium, a metal that has been used as a contrast agent for 20 years.
    • However, both germination and elongation are significantly inhibited by the inclusion of calcium channels blockers, including lanthanum, gadolinium, or verapamil.

Origin

Late 19th century: from gadolinite.

Definition of gadolinium in US English:

gadolinium

nounˌɡadəˈlinēəmˌɡædəˈlɪniəm
  • The chemical element of atomic number 64, a soft silvery-white metal of the lanthanide series.

    (化学元素)钆(符号: Gd

    Example sentencesExamples
    • However, both germination and elongation are significantly inhibited by the inclusion of calcium channels blockers, including lanthanum, gadolinium, or verapamil.
    • It has been known since the late 1970s that paramagnetic metal ions such as gadolinium improve the MRI signal, but the toxicity of these uncomplexed metal ions has limited their use.
    • For undergraduate chemistry it was required that one could recite the whole thing from memory, to know that iridium lies at the foot of cobalt, that europium is sandwiched between samarium and gadolinium.
    • In contrast, the prolonged increase in cytosolic calcium was greatly enhanced in the presence of gadolinium or lanthanum chloride.
    • This is a major improvement over gadolinium, a metal that has been used as a contrast agent for 20 years.

Origin

Late 19th century: from gadolinite.

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