digitalis
noun
dig·i·tal·is
ˌdi-jə-ˈta-ləs
also
-ˈtā-
1
: foxglove
2
: the dried powdered leaf of the common foxglove that contains glycosides which act on the heart and that is a powerful cardiotonic serving especially to increase the force of myocardial contraction
broadly
: any of various cardiac glycosides (such as digitalin or digoxin) that are constituents of digitalis or are derived from a related foxglove (Digitalis lanata)
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Merriam-Webster unabridged
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