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  1. pacemaker

    • IPA[ˈpeɪsˌmeɪkə]

    英式

    • n.
      a person or animal who sets the pace at the beginning of a race, sometimes in order to help a runner break a record;a person who sets standards of achievement for others
    • noun: pacemaker, plural noun: pacemakers

    • 釋義

    名詞

    • 1. a person or animal who sets the pace at the beginning of a race, sometimes in order to help a runner break a record he acted as a pacemaker for Bannister when he broke the four-minute mile
    • a person who sets standards of achievement for others unbeaten Rangers are the surprise pacemakers
    • 2. a device for stimulating the heart muscle and regulating its contractions.
    • the part of the heart muscle (the sino-atrial node) which normally regulates contractions.
    • the part of an organ or of the body which controls rhythmic physiological activity the brain's circadian pacemaker which regulates our ‘biological clock’
    • 更多解釋
    • IPA[ˈpāsˌmākər]

    美式

    • n.
      an artificial device for stimulating the heart muscle and regulating its contractions.

    Oxford American Dictionary