
1) Byzantine Rite 2) Eastern Christian hymn 3) Liturgy of the Hours
Found on
https://www.crosswordclues.com/clue/theotokion

A Theotokion is a hymn to Mary, the Theotokos (Birthgiver of God), which is read or chanted (troparion or sticheron) during the Divine Services (Canonical hours and Divine Liturgy) of the Eastern Orthodox and Eastern Catholic churches. In the fifth century, Nestorius, Patriarch of Constantinople (428 - 431), publicly attacked the use of the term T...
Found on
http://en.wikipedia.org/wiki/Theotokion

(from the article `troparion`) ...alternation); katabasia (from `to descend`) refers to the singing of an ode by left and right choirs descending from their stalls and singing in ...
Found on
http://www.britannica.com/eb/a-z/t/36
No exact match found.