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

Vice President Harris’ campaign has an interdepartmental team “to prepare for the potential effects of AI this election, including the threat of malicious deepfakes,” said spokeswoman Mia Ehrenberg in a statement.

From Los Angeles Times • Aug. 21, 2024

I still think," said Cochrane, "that we could have done with a little interdepartmental cooperation.

From Operation: Outer Space by Leinster, Murray