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Any of several glycosides obtained chiefly from plant sources such as the foxglove, used medicinally to increase the force of contraction of heart muscle and to regulate heartbeats.
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|Noun||1.||cardiac glycoside - obtained from a number of plants and used to stimulate the heart in cases of heart failure|
steroid - any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects