Definitions

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

Etymologies

digital(is) + -in.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

  • Foxgloves contain digitalin, one of whose effects is to make the heart muscle pump harder - potentially useful in cases of congestive heart failure, but fatal in overdose.

    Archive 2008-07-01

  • The latter were filled with a small amount of digitalin, which was not enough to cause any problems, and a massive amount of atropine.

    The 13 Culprits

  • I gave him an intramuscular injection of digitalin and another of morphine hydrochloride, which he accepted with apparent pleasure as part of the game.

    Favourite Dog Stories

  • Futile or not, I rummaged through the contents of my case for the digitalin I had made for him.

    Dragonfly in Amber

  • It wasn't digitalin, but his purpose that sustained him now, lighting him with a glow as though a candle burned behind the waxy skin of his face.

    Dragonfly in Amber

  • I had assumed that the digitalin must have come from the foxgloves at the foot of the garden.

    Crime On the Coast

  • Mightn't digitalin have been used just for that reason, that it was available to everyone?

    Crime On the Coast

  • The only thing they did not agree on was whether the digitalin was sufficient to cause death.

    Crime On the Coast

  • Or had she deliberately kept me down there, knowing more about the effects of digitalin than I?

    Crime On the Coast

  • Then I picked up a torn prescription with a very strong dose of digitalin in it.

    Hercule Poirot's Casebook

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