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

The Department of the Interior said when the algae first appeared that it was “residual,” from the supply lines to the pool.

From Los Angeles Times ● Jun. 20, 2026

The Department of the Interior has launched a frantic effort to fix the mess.

From Slate ● Jun. 19, 2026

The Department of the Interior said that the turbines may block radar signals External link, based on classified reports.

From Barron's ● Jan. 13, 2026

The National Park Service, a bureau of the Department of the Interior, prepared to handle the huge crowd that was expected.

From "The Voice That Challenged a Nation: Marian Anderson and the Struggle for Equal Rights" by Russell Freedman