1911 Encyclopædia Britannica/Back-Choir
BACK-CHOIR, Retro-Choir, a space behind the high altar in the choir of a church, in which there is, or was, a small altar standing back to back with the other.
See also Retroquire on Wikipedia; and our 1911 Encyclopædia Britannica disclaimer.
BACK-CHOIR, Retro-Choir, a space behind the high altar in the choir of a church, in which there is, or was, a small altar standing back to back with the other.