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• Homeland Security
  Homeland Security

  noun

  the United States Department of Homeland Security, the body responsible for dealing with terrorist threats on American soil
• homeland security
  homeland security

  noun

  precautions taken by the government of a specified country against terrorist attacks

Homeland Security

¹ British  

noun

1. the United States Department of Homeland Security, the body responsible for dealing with terrorist threats on American soil

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homeland security ² British  

noun

1. precautions taken by the government of a specified country against terrorist attacks

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Example Sentences

Homeland Security Secretary Markwayne Mullin, Noem’s successor, paused the warehouse plan after he took office in March.

From The Wall Street Journal • Jun. 19, 2026

"The Iranian national football team agreed to these terms," a US Department of Homeland Security spokesperson told the BBC when asked for a response to Ghalenoei's comments.

From BBC • Jun. 19, 2026

Seven federal agencies — including the Department of Homeland Security and the Federal Aviation Administration — committed significant resources and manpower.

From Salon • Jun. 15, 2026

Nor would anyone have the authority to demand that, for instance, the FBI share information with the Department of Homeland Security.

From Slate • Jun. 15, 2026

“Sorry. Homeland Security doesn’t like it if you overstay your visa.”

From "The Sun Is Also a Star" by Nicola Yoon