- 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.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). a cappella. Retrieved September 20, 2026, from http://smartdefine.org/a_cappella/definitions/1969474 |
| Chicago | Webster's. 2011. "a cappella" http://smartdefine.org/a_cappella/definitions/1969474 (accessed September 20, 2026). |
| Harvard | Webster's 2011, a cappella, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/a_cappella/definitions/1969474>. |
| MLA | Webster's. "a cappella" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/a_cappella/definitions/1969474> |