Meaning of artificial heart

ar'tifi'cial heart'

Pronunciation: [key]
  1. any of various four-chambered devices, modeled on the human heart, that pump blood by attachment to a power source and that are constructed for temporary external use or for implantation as a temporary or permanent heart replacement.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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