Also found in: Medical.
Variant of cardio-.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a combining form meaning “heart”: cardiogram.Also, esp. before a vowel,cardi-.
[< Greek kardio-, comb. form of kardía]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.