The term USE E-CIGARETTES can be summarized by the four letter word VAPE. Vaping is the act of inhaling and exhaling an aerosol, often referred to as vapor, which is produced by an e-cigarette or similar device. E-cigarettes are battery-powered devices that heat a liquid, usually containing nicotine, into an aerosol that the user inhales. The use of e-cigarettes has become increasingly popular in recent years, especially among young people.