of or relating to the heart: cardiac disease.
of or relating to the esophageal portion of the stomach.


Medicine/Medical. a cardiac remedy.
a person suffering from heart disease.

Origin of cardiac

1400–50; late Middle English (< Middle French cardiaque) < Latin cardiacus < Greek kardiakós, equivalent to kardí(a) heart + -akos -ac
Related formspost·car·di·ac, adjectivepre·car·di·ac, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cardiac

Contemporary Examples of cardiac

Historical Examples of cardiac

British Dictionary definitions for cardiac



of or relating to the heart
of or relating to the portion of the stomach connected to the oesophagus


a person with a heart disorder
obsolete a drug that stimulates the heart muscle

Word Origin for cardiac

C17: from Latin cardiacus, from Greek, from kardia heart
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for cardiac

c.1600, from French cardiaque (14c.) or directly from Latin cardiacus, from Greek kardiakos "pertaining to the heart," from kardia "heart" (see heart (n.)). Cardiac arrest is attested from 1950.

Greek kardia also could mean "stomach" and Latin cardiacus "pertaining to the stomach." This terminology continues somewhat in modern medicine. Confusion of heart and nearby digestive organs also is reflected in Breton kalon "heart," from Old French cauldun "bowels," and English heartburn for "indigestion."

Online Etymology Dictionary, © 2010 Douglas Harper

cardiac in Medicine




Of, near, or relating to the heart.
Of, near, or relating to the cardia.


A person with a heart disorder.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

cardiac in Science



Relating to or involving the heart.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.