retrochoir

• POS: Noun
• HYPHEN: ret=ro=choir

CIDE DICTIONARY

retrochoir, n. [Pref. retro- + choir.].

 Any extension of a church behind the high altar, as a chapel; also, in an apsidal church, all the space beyond the line of the back or eastern face of the altar.  [1913 Webster]

OXFORD DICTIONARY

retrochoir, n. the part of a cathedral or large church behind the high altar.

Etymology

med.L retrochorus (as RETRO-, CHOIR)