interdenominational
🇺🇸
/ˌɪntərdɪˌnɑːmɪˈneɪʃənl/
🇬🇧
/ˌɪntədɪˌnɒmɪˈneɪʃənl/
involving or shared by people from different religious groups or denominations
The church organized an interdenominational event to promote unity among the various Christian groups.