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pacemaker

   Also found in: Dictionary/thesaurus, Medical, Acronyms, Wikipedia, Hutchinson 0.08 sec.

pacemaker

Source of rhythmic electrical impulses that trigger heart contractions. In the heart's electrical system, impulses generated at a natural pacemaker are conducted to the atria and ventricles. Heart surgery or certain diseases can interrupt conduction (heart block), requiring use of a temporary or permanent artificial pacemaker. A small electrode attached to an electric generator outside the body is threaded through a vein into the heart. The generator, inserted beneath the skin, produces regular pulses of electric charge to maintain the heartbeat. Permanent pacemakers can also be implanted on the heart's surface.
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A man in white clothes, who could only be the surviving half- breed, was running as one does run when Death is the pacemaker.
The Lost World by Doyle, Sir Arthur Conan View in context
You might easily pick out these pacemakers, for they worked under the eye of the bosses, and they worked like men possessed.
The Jungle by Sinclair, Upton View in context
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