interdenominational

The word is a modern English compound, built systematically from established morphemes. The prefix "inter-," from Latin inter (between, among), was attached to the existing adjective "denominational," which itself derives from Latin denominare (to name). "Denominational" entered English in the 18th century, specifically relating to named religious sects. By adding "inter-," the term was logically coined to describe activities, relations, or cooperation that occurs between these named religious groups, reflecting a 20th-century emphasis on ecumenism and cross-sectarian dialogue. The construction follows a transparent pattern similar to "international" or "intercollegiate."

Structure: inter (between) + denominational (relating to a religious denomination) - inter: A prefix of Latin origin, meaning "between, among, mutually, reciprocally." It functions as a relational modifier. - denominational: An adjective of Latin origin (via French), meaning "relating to a particular religious denomination." It functions as the core semantic base.