in·​ter·​de·​part·​men·​tal ˌin-tər-di-ˌpärt-ˈmen-tᵊl How to pronounce interdepartmental (audio)
: existing, exchanged, or carried on between two or more departments (as of an organization) or their members
an interdepartmental committee
especially : characterized by participation or cooperation of two or more departments of an educational institution
an interdepartmental course of study
interdepartmentally adverb
or less commonly inter-departmentally
working interdepartmentally

Word History

First Known Use

1855, in the meaning defined above

Time Traveler
The first known use of interdepartmental was in 1855

Dictionary Entries Near interdepartmental

Cite this Entry

“Interdepartmental.” Dictionary, Merriam-Webster, Accessed 5 Dec. 2022.

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