from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of, near, or relating to the heart: cardiac arteries.
  • adj. Of or relating to the cardia.
  • n. A person with a heart disorder.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Pertaining to the heart.
  • adj. Pertaining to the cardia.
  • n. A medicine that excites action in the stomach.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Pertaining to, resembling, or hear the heart.
  • adj. Exciting action in the heart, through the medium of the stomach; cordial; stimulant.
  • n. A medicine which excites action in the stomach; a cardial.

from The Century Dictionary and Cyclopedia

  • Of or pertaining to the heart.
  • Exciting action in the heart; having the quality of stimulating action in the circulatory system.
  • Hence Cordial; producing strength and cheerfulness.
  • Pertaining to the esophageal portion of the stomach: opposed to pyloric.
  • n. A medicine which excites action in the stomach and animates the spirits; a cordial.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of or relating to the heart


Middle English, from Latin cardiacus, from Greek kardiakos, from kardiā, heart; see kerd- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek καρδιακός (kardiakos, "relating to the heart"), from καρδία (kardia, "heart"). Distantly related to English courage, which is from Latin, but of same Proto-Indo-European root. (Wiktionary)



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