interdepartmental

American  

[in-ter-dee-pahrt-men-tl, -di-pahrt-] / ˌɪn tərˌdi pɑrtˈmɛn tl, -dɪ pɑrt- /

adjective

1. involving or existing between two or more departments.

   interdepartmental rivalry.

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interdepartmental British  

/ ˌɪntəˌdiːpɑːtˈmɛntəl /

adjective

1. of, relating to, or conducted between two or more departments

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Other Word Forms

• interdepartmentally adverb

Etymology

Origin of interdepartmental

First recorded in 1890–95; inter- + departmental ( def. )

Example Sentences

Authorities have set up an interdepartmental investigation task force to look into the cause of the blaze.

From Barron's • Nov. 30, 2025

The ask, spelled out in an interdepartmental memo: something live from New York for a young audience.

From The Wall Street Journal • Nov. 3, 2025

The report will form the basis of recommendations by an interdepartmental working group and a survivors' reference group to the first and deputy first ministers.

From BBC • Feb. 12, 2025

On Friday, a spokesman said she “has engaged in an unprecedented and coordinated interdepartmental approach to issues in the community,” including adding additional police officers, with more action to come.

From Los Angeles Times • Oct. 19, 2024

At the same time, Johnson made no move to order a common enlistment standard; he told Fahy that the matter was extremely controversial and setting such standards would involve rescinding previous interdepartmental agreements.

From Integration of the Armed Forces, 1940-1965 by MacGregor, Morris J.