What does digitalis mean?
Digitalis is a noun with two closely linked senses: it names the genus of flowering plants better known as foxgloves, and it denotes the potent cardiac drug prepared from their leaves. In medicine, digitalis refers to preparations rich in cardiac glycosides — compounds such as digoxin that slow and strengthen the heartbeat — making it historically important in treating heart failure and irregular rhythms such as atrial fibrillation. The margin between a helpful dose and a dangerous one is narrow, so "digitalis toxicity" remains a familiar concern in clinical practice. Outside medicine, gardeners use the word mainly in botanical contexts, where "foxglove" is the everyday equivalent. Derived ultimately from Latin digitus, meaning finger — a nod to the flower's fingertip-shaped blooms — digitalis carries connotations of both old herbal tradition and precise modern pharmacology, bridging folklore and cardiology in a single word.
A cardiac drug obtained from foxglove leaves, containing glycosides such as digoxin, used to treat heart failure and certain arrhythmias.
"Her cardiologist prescribed digitalis to help regulate her heartbeat."
Used as an uncountable mass noun in medical writing; dosing language treats it as a substance rather than a countable item.
A plant of the genus Digitalis, especially the common foxglove (Digitalis purpurea), bearing spikes of bell-shaped flowers.
"Digitalis thrives at the edge of woodland gardens where dappled shade persists."
When referring to individual plants, the plural is typically rendered as the unchanged "digitalis" or more naturally replaced by "foxgloves"; the Latin-style plural is rarely used in ordinary English.
"Several digitalis self-seeded along the fence line this spring."
The heart medicine digitalis was inspired by an old folk remedy for dropsy — foxglove tea — that botanist-physician William Withering famously investigated in the 1780s.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of digitalis
The word comes from New Latin Digitalis, the botanical genus name coined from classical Latin digitalis, meaning "of the finger," itself formed from digitus ("finger"). The name alludes to the foxglove's distinctive tubular flowers, which resemble the tips of fingers and can be slipped onto them like thimbles. It entered English usage around the late eighteenth century as physicians adopted the plant into formal medicine, notably through William Withering's work on its effects in dropsy. Related words sharing the same root include "digit" and "digital."
How digitalis is actually used
Register is chiefly medical and scientific when referring to the drug; in horticultural contexts "foxglove" is far more common than "digitalis." The word functions as an uncountable mass noun when denoting the drug. Because therapeutic doses sit close to toxic ones, the term frequently appears alongside warnings about poisoning.
Easily confused with digitalis
"Digital" is an adjective relating to fingers or to computer technology, whereas "digitalis" is a noun naming either the foxglove plant or the cardiac drug derived from it.