from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A cardiac glycoside, C41H64O14, obtained from the leaves of a foxglove, Digitalis lanata, with pharmacological effects similar to digitalis.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) a steroid glycoside, one of the cardiotonic chemical substances which is extracted from the foxglove. It is a white, crystalline substance (C41H64O14), and is a 3-substituted triglucoside of a steroid, related structurally to digitalin and digitoxin. It is used as a cardiotonic for treatment of certain heart conditions, such as congestive heart failure. Chemically it is (3β,5β,12β)-3-[(O-2,6-Dideoxy-β-D-ribo-hexopyranosyl-(1->4)-O-2,6-dideoxy-β-D-ribo-hexopyranosyl-(1->4)-2,6-dideoxy-β-D-ribo-hexopyranosyl)oxy]-12,14-dihydroxy-card-20(22)-enolide. The related compounds digitalin and digoxin are also extracted from the foxglove (Digitalis lanata and Digitalis purpurea). The class of steroid glycosides having cardiotonic properties are refered to as the cardiac glycosides.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A purified cardiac glycoside extracted from the foxglove plant, Digitalis lanata, widely used in the treatment of heart conditions such as atrial fibrillation.

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

  • noun digitalis preparation (trade name Lanoxin) used to treat congestive heart failure or cardiac arrhythmia; helps the heart beat more forcefully


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

[dig(italis) + (t)oxin.]



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