Nicotine

Part of speech: noun

Pronunciation: /ˈnɪkətiːn/

Definitions

1. A plant-derived alkaloid predominantly present in tobacco that works as a stimulant overall and can contribute to addiction and other health-related effects
2. An organic compound mainly sourced from tobacco plants that serves as a central nervous system stimulant and is frequently associated with dependency issues
3. A chemical compound found in tobacco that acts as both a stimulant for the nervous system and a substance often linked to addiction and various health risks

Etymology: Jean Nicot was a French diplomat stationed in Lisbon in the 1560s, and he never intended to name anything after himself. In 1561 he sent tobacco seeds and leaves back to France, where he promoted the plant as a medicine. Nearly two centuries later, chemists isolated the alkaloid responsible for tobacco's effects and gave it a name built from his surname, with the French suffix "-ine," which was used for many chemical substances. The name thus honours a man who championed the plant, while the compound itself is far less benign. The source for the surname's own origin is unclear, so the family name predates the chemical name only as a surname, and nothing more can be said about its roots with confidence.