It is an adjective.
Meaning : relating to a fixed form of public worship used in churches.It means in accordance with liturgy.
Synonyms : ceremonial, ritual, solemn, sacramental, church,conventional, ritualistic
Antonyms : secular, informal, unceremonial
Etymology:The word comes from the Classical Greek word leitourgia literally meaning a "public work.
1)The choir group sang melodiously to the accompaniment of liturgical music.
2)He has an almost liturgical refrain in the text.
3)But there are other aspects of this, even in the strictly liturgical field, that we haven't yet touched on.
4)In liturgical chant the assembly does not have to be the only protagonist.
5)To change the liturgical calendar means to change our way of relating to God.