antechoir
noun
an·te·choir
ˈantēˌ-,
ˈaan-,
-tə̇-
1
: a space enclosed or reserved for the clergy and choristers at the entrance to a choir
2
: the division of a divided choir that is farther away from the sanctuary
Word History
Etymology
ante- + choir
First Known Use
1768, in the meaning defined at sense 1