an introductory performance, preceding and preparing for the principal matter; a preliminary part, movement, strain, etc.; especially (mus.), a strain introducing the theme or chief subject; a movement introductory to a fugue, yet independent; -- with recent composers often synonymous with overture.-to play an introduction or prelude; to give a prefatory performance; to serve as prelude.-to introduce with a previous performance; to play or perform a prelude to; as, to prelude a concert with a lively air.-to serve as prelude to; to precede as introductory.