/ Dictionary / Index C cardiac glycoside: Meaning and Definition of Find definitions for: car'diac gly'coside Pronunciation: [key] — Pharm. Pharm. any of a group of drugs used to stimulate the heart in cases of heart failure, obtained from a number of plants, as the foxglove, squill, or yellow oleander. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cardiac cycle cardiac muscle Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language