Definition of mononym
- a person's name consisting of one word, typically a first name without a surname
Usage examples of mononym
It wasn't until after he legally changed his name to a mononym that he realized all forms require a last-name field, and he now has to enter "NO LAST NAME" instead of his old surname.
After years of fame, the actor dropped his surname and adopted a mononym.
The form asked for a last name, but his stage name was a mononym.