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pacemaker    音標拼音: [p'esm,ekɚ]
n. 定步速者,帶步人;標兵;起搏器;起搏點

定步速者,帶步人;標兵;起搏器;起搏點

pacemaker
n 1: a leading instance in its field; "the new policy will be a
pacesetter in community relations" [synonym: {pacesetter},
{pacemaker}]
2: a specialized bit of heart tissue that controls the heartbeat
[synonym: {pacemaker}, {cardiac pacemaker}, {sinoatrial node},
{SA node}]
3: an implanted electronic device that takes over the function
of the natural cardiac pacemaker [synonym: {pacemaker},
{artificial pacemaker}]
4: a horse used to set the pace in racing [synonym: {pacer},
{pacemaker}, {pacesetter}]

pacemaker \pacemaker\ n. (Physiol. & Anat.)
1. a specialized bit of heart tissue that controls the
heartbeat.

Syn: cardiac pacemaker, sinoatrial node.
[WordNet 1.5]

2. An implanted electronic device that takes over the
function of the natural cardiac pacemaker[1]; -- used to
assist people whose heartbeat is irregular.

Syn: artificial pacemaker.
[WordNet 1.5]

3. A horse used to set the pace in racing.

Syn: pacer, pacesetter.
[WordNet 1.5]



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