The name Monica could mean "advisor" from the Latin word "moneo", or "alone" from the Greek word "monahos".
Famous bearers
Bearers include Monica Dickens (1915 - 1992), an English writer, and the great-granddaughter of novelist Charles Dickens;
Monica Bellucci (born 1964), an Italian actress and former fashion model;
Monica Seles (born 1973), an American tennis player.