Translate nicotine | into French | into German | into Italian | into Spanish Definition of nicotine
noun
a toxic colorless or yellowish oily liquid that is the chief active constituent of tobacco. It acts as a stimulant in small doses, but in larger amounts blocks the action of autonomic nerve and skeletal muscle cells. Nicotine is also used in insecticides. - An alkaloid; chemical formula: C10H14N2
