Interdenominational

a.

1.

Occurring between or among, or common to, different denominations; as, interdenominational fellowship or belief.

Adj.

1.

interdenominational - occurring between or among or common to different churches or denominations; "interchurch aid"; "interdenominational cooperation between Methodists and Presbyterians" Synonyms: interchurch

interchurch, nonsectarian, unsectarian