Department of the Interior

American  

noun

1. the department of the U.S. federal government charged with the conservation and development of the natural resources of the U.S. and its possessions. DOI

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Department of the Interior Cultural  

1. A department of the federal executive branch responsible for the National Park Service, the Bureau of Indian Affairs, and a variety of programs designed to preserve natural resources in the United States and its territories and possessions in the Pacific Ocean.

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Example Sentences

See Examples For:

Department of the Interior

They were suddenly overwhelmed by flames and tried to take shelter, the Department of the Interior said.

From BBC ● Jun. 28, 2026

While the Department of the Interior has said that they are testing the water, they haven’t publicly shared the results.

From Slate ● Jun. 27, 2026

A spokesperson for the Department of the Interior, which manages the National Mall in downtown Washington, described the incident as "deranged vandalism" and said it "will not be tolerated."

From Barron's ● Jun. 11, 2026

Department of the Interior, according to communications reviewed by ProPublica and High Country News.

From Salon ● Dec. 4, 2025

Mr. Montsisi and I went back to the Department of the Interior, armed with the visa and other papers from the embassy.

From "Kaffir Boy: An Autobiography" by Mark Mathabane