from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A white crystalline glycoside, C36H56O14, that is obtained from the seeds of the common foxglove.
- n. One of several mixtures of digitalis glycosides that are extracted from the leaves or seeds of the common foxglove.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of a mixture of glycosides, extracted from the foxglove plant, that is used as a cardiotonic
from the GNU version of the Collaborative International Dictionary of English
- n. Any one of several extracts of foxglove (Digitalis), as the “French extract,” the “German extract,” etc., which differ among themselves in composition and properties. Both Digitalis lanata and Digitalis purpurea have been used to prepare such extracts.
- n. the distinctive chemical substance, a steroid glycoside, which is the essential ingredient of the extracts of foxglove. It is a white, crystalline substance (C36H56O14), and is a 3-substituted diglucoside of a steroid. It is a powerful cardiac stimulant and is used as a cardiotonic for treatment of certain heart conditions, such as congestive heart failure. Chemically it is (3β,5β,16β)-3-[6-Deoxy-4-O-β-D-glucopyranosyl-3-O-methyl-β-D-galactopyranosyl)oxy]-14,16-dihyroxy-card-20(22)-enolide. The related compounds digitoxin and digoxin are also extracted from the foxglove. The class of steroid glycosides having cardiotonic properties are refered to as the cardiac glycosides.
from The Century Dictionary and Cyclopedia
- n. The substance or substances isolated from the leaves of Digtitalis purpurea as its active principle.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a powerful cardiac stimulant obtained from foxglove
digital(is) + -in.(American Heritage® Dictionary of the English Language, Fourth Edition)