liturgy -
n. (pl. -ies)
1 a a form of public worship. b a set of formularies for this. c public worship in
accordance with a prescribed form.
2 (the
Liturgy) the Book of Common Prayer.
3 the Communion office of the Orthodox
Church.
4 Gk Antiq. a public office or duty performed voluntarily by a rich Athenian.
[F liturgie or LL liturgia f. Gk leitourgia public worship f. leitourgos minister f. leit- public + ergon work] 
