Definitions for a cappellaˌɑ kəˈpɛl ə
Random House Webster's College Dictionary
a cap•pel•laˌɑ kəˈpɛl ə(adv.; adj.)
without instrumental accompaniment.
Origin of a cappella:
1875–80; < It: in the manner of a chapel (choir)
Performed by a soloist or choir with no instrumental accompaniment; literally "in the style of the (Sistine) Chapel (in Rome)"; such as a musical Mass done a cappella.
A time indication, equivalent to alla breve.
Performed vocally without instrumental accompaniment.
sung without instrumental accompaniment
(of a choir) singing solely or mainly without instrumental accompaniment.
Origin: * First attested in 1876.
in church or chapel style; -- said of compositions sung in the old church style, without instrumental accompaniment; as, a mass a capella, i. e., a mass purely vocal
a time indication, equivalent to alla breve