The correct spelling of the medical term for cosmetic surgery of the mouth, "cheoplasty," is pronounced /kiːəʊˈplæsti/. The first syllable "cheo" is pronounced with a long "e" sound and the emphasis is on the second syllable. The word is derived from the Greek words "cheilos" meaning "lip" and "plassein" meaning "to form or mold." Cheoplasty is often used to reshape or enhance the appearance of the lips or the corners of the mouth. If you're considering this type of surgery, consult with a licensed and experienced surgeon.