The Collaborative International Dictionary
Wiktionary
undenominational
a. Not denominational, used e.g. of a church.
WordNet
undenominational
adj. not bound to devoted to the promotion of a particular denomination; "undenominational religious instruction"
Usage examples of "undenominational".
The College was undenominational, but some form of Christian worship was held to be essential to community life.
Not only the journals of their own sect and the undenominational journals, but also to a notable extent the religious journals of other denominations, have depended for their efficiency on men bred in the discipline of Congregationalism.