noun
or ako·lou·thia ˌäkə(ˌ)lüˈthēə
( -s )
Etymology: Middle Greek akolouthia, from Greek, sequence, from akolouthos following, from ha-, a- together + keleuthos path; akin to Greek homos same and to Lithuanian keliánti to travel and perhaps to Greek kellein to drive — more at same , hold
1. : a set order or traditional arrangement of a religious service in the Eastern Church
2. : divine office