Ouabain

Part of speech: noun

Pronunciation: /ˈwɑːbeɪn/

Definitions

1. A natural compound obtained from specific plants, it serves as a cardiac glycoside affecting heart function and has therapeutic applications in medicine
2. This substance, found in certain plants, is known for its role as a cardiac glycoside and impacts the contractions of heart muscles in medical practices
3. A toxin derived from particular plants that affects heart muscle activity and is used in medical treatment

Etymology: Ouabain is named after the tree that produced the poison it was first isolated from. In Somali, "waabaayo" means "arrow poison", and the name was taken from the ouabaio tree, whose wood and bark were used by Somali hunters to tip their arrows. The compound was extracted from this plant, and the chemist's suffix "-in", a common ending for isolated plant substances, was added to form the modern name. The word reached European languages through French, which adopted it as "ouabaïne" for the isolated substance. English speakers then borrowed the French form, so the name carries a trace of an East African hunting practice into the vocabulary of pharmacology. The ending tells you what the word is: a purified chemical from a plant, not a common name for the plant itself.