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Từ điển WordNet v3.1 - WordNet Dictionary
pacemaker


noun
1. a leading instance in its field
- the new policy will be a pacesetter in community relations
Syn:
pacesetter
Hypernyms:
exemplar, example, model, good example
2. an implanted electronic device that takes over the function of the natural cardiac pacemaker
Syn:
artificial pacemaker
Hypernyms:
electronic device
3. a specialized bit of heart tissue that controls the heartbeat
Syn:
cardiac pacemaker, sinoatrial node, SA node
Hypernyms:
cardiac muscle, heart muscle
4. a horse used to set the pace in racing
Syn:
pacer, pacesetter
Derivationally related forms:
pace (for: pacer)
Hypernyms:
racehorse, race horse, bangtail


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