Definition for a cappella

1. (music) Performed by a choir with no instrumentalActing as an instrument; serving as a means; contributing to promote; conductive; helpful; serviceable; essential or central. accompanimentThat which gives support or adds to the background in music, or adds for ornamentation.; literallyIn the direct, word for word sense. With neither idiom nor metaphor. "in the style of the (Sistine) Chapel (in Rome)"; such as a musical Mass done a capella.
2. (music) A time indicationAct of pointing out or indicating., equivalentsimilar or identical in value, meaning or effect; virtually equal to alla breve.

• cappella
• chapel