Definition of "a cappella"

a cappella

/ˌæ.kəˈpɛl.ə/

noun
plural a cappellas
1. (music) A vocal performance with no instrumental accompaniment.
adverb
not comparable
1. (music) In a manner of a choir with no instrumental accompaniment; literally, "in the style of the (Sistine) Chapel (in Rome)", such as a musical Mass done a cappella.
2. (obsolete, music) In alla breve time.
adjective
not comparable
1. (music) Singing solely or mainly without instrumental accompaniment.
2. (music, US) Related to a form of purely vocal music mostly associated with American college performance groups.
3. (obsolete, music) alla breve.

/ˈloʊdɚ/