- a colorless, oily, water-soluble, highly toxic, liquid alkaloid, C10H14N2, found in tobacco and valued as an insecticide.
- a colourless oily acrid toxic liquid that turns yellowish-brown in air and light: the principal alkaloid in tobacco, used as an agricultural insecticide. Formula: C 10 H 14 N 2
poisonous alkaloid found in tobacco leaves, 1819, from French nicotine, earlier nicotiane, from Modern Latin Nicotiana, formal botanical name for the tobacco plant, named for Jean Nicot (c.1530-1600), French ambassador to Portugal, who sent tobacco seeds and powdered leaves back to France 1561. His name is a diminutive of Nicolas.
- A colorless, poisonous alkaloid derived from the tobacco plant and used as an insecticide. It is the substance in tobacco to which smokers can become addicted.
- A colorless, poisonous compound occurring naturally in the tobacco plant. It is used in medicine and as an insecticide, and it is the substance in tobacco products to which smokers can become addicted. Nicotine is an alkaloid. Chemical formula: C10H14N2.
A poisonous chemical substance found in the tobacco plant.