| Pronunciation: | | 'peys`meykur
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 WordNet Dictionary |
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| | Definition: | |
- [n] a horse used to set the pace in racing
- [n] an implanted electronic device that takes over the function of the natural cardiac pacemaker
- [n] a specialized bit of heart tissue that controls the heartbeat
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PACEMAKER is a 9 letter word that starts with P. |
| | Synonyms: | | artificial pacemaker, cardiac pacemaker, pacer, pacesetter, SA node, sinoatrial node |
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| | See Also: | | bangtail, cardiac muscle, electronic device, heart muscle, race horse, racehorse |
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| Medical Dictionary |
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| | Definition: | | an electronic device that is surgically implanted into the patient's heart and chest to regulate heartbeat. |
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| Biology Dictionary |
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| | Definition: | | A pacemaker is something which initiates an action and controls the rhythm of a series of actions. The physiologic pacemaker of the heart is the sinus node. An artificial pacemaker is a device implanted in a patient which functions when the physiologic pacemaker fails. |
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