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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

Let’s also not forget that detention centers run by the Department of Homeland Security are cesspools for medical neglect and disease, including measles, mumps and hepatitis A outbreaks.

From Salon • May 11, 2026

The annual Border Security Expo, a trade show catering to Department of Homeland Security personnel, provides an array of companies showing off the newest, flashiest technology they are eager to sell to the U.S. government.

From The Wall Street Journal • May 8, 2026

The Department of Homeland Security - the agency that helps ward off against cyber attacks - "must immediately help states and localities", Schumer wrote.

From BBC • May 8, 2026

US Homeland Security officials said Soliman was in the country illegally, having overstayed a tourist visa, but that he had applied for asylum in September 2022.

From Barron's • May 7, 2026

The Federal Emergency Management Agency had been its own freestanding agency for decades, but after 9/11 had been folded into the Department of Homeland Security.

From "Zeitoun" by Dave Eggers