Meaning

noun a Christian sacrament commemorating the Last Supper by consecrating bread and wine

noun a rite or body of rites prescribed for public worship

originFrom Middle French liturgie, from Latin liturgia, from Ancient Greek λειτουργία (leitourgía), from λειτ- (leit-), from λαός (laós, “people”) + -ουργός (-ourgós), from ἔργον (érgon, “work”) (the public work of the people done on behalf of the people).

Etymology from Wiktionary, CC BY-SA 3.0