Domingo, PlacidoDo‧min‧go, Pla‧ci‧do /dəˈmɪŋɡəʊ, ˈplæsədəʊ/(1941–) a Spanish opera singer, considered to be one of the greatest tenors (=men with high singing voices) in the world. In the 1990s he became famous as one of the ‘Three Tenors’, together with Luciano Pavarotti and José Carreras.