an elaborate instrumental composition in three or more movements, similar in form to a sonata but written for an orchestra and usually of far grander proportions and more varied elements.
an instrumental passage occurring in a vocal composition, or between vocal movements in a composition.
an instrumental piece, often in several movements, forming the overture to an opera or the like.
an extended large-scale orchestral composition, usually with several movements, at least one of which is in sonata form. The classical form of the symphony was fixed by Haydn and Mozart, but the innovations of subsequent composers have freed it entirely from classical constraints. It continues to be a vehicle for serious, large-scale orchestral music
a piece of instrumental music in up to three very short movements, used as an overture to or interlude in a baroque opera
any purely orchestral movement in a vocal work, such as a cantata or oratorio
late 13c., the name of various musical instruments, from Old French symphonie "harmony" (12c.), from Latin symphonia "a unison of sounds, harmony," from Greek symphonia "harmony, concert," from symphonos "harmonious," from syn- "together" (see syn-) + phone "voice, sound" (see fame (n.)).
Meaning "harmony of sounds" is attested from mid-15c.; sense of "music in parts" is from 1590s. "It was only after the advent of Haydn that this word began to mean a sonata for full orchestra. Before that time it meant a prelude, postlude, or interlude, or any short instrumental work." ["Elson's Music Dictionary"] Meaning "elaborate orchestral composition" first attested 1789 (symphonic in this sense is from 1864). Elliptical for "symphony orchestra" from 1926.
An extended musical composition for orchestra in several movements, typically four. Among the composers especially known for their symphonies are Ludwig van Beethoven, Johannes Brahms, Franz Josef Haydn, Gustav Mahler, and Wolfgang Amadeus Mozart.
