MDMA (3,4-methylenedioxy-N-methylamphetamine), most commonly known today by the street name ecstasy, (often abbreviated to E, X, or XTC) is a semisynthetic entactogen of the phenethylamine family. It is considered a recreational drug, and has long had a strong association with the rave culture. MDMA is illegal in most countries, and its possession, manufacture or sale may result in criminal prosecution.