Stretto

The Italian term stretto has two distinct meanings in music:In a fugue, stretto is the imitation of the subject in close succession, so that the answer enters before the subject is completed. In non-fugal compositions, a stretto is a passage, often at the end of an aria or movement, in faster tempo. Examples include the end of Franz Liszt's transcendental etude No.10, the end of the last movement... (Wikipedia)