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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

The Department of Homeland Security initially asked the Social Security Administration to mark about 6,000 living people as dead, and those people were added to the death file, according to the latest complaint.

From MarketWatch • Jun. 5, 2026

Customs and Border Protection, an arm of Homeland Security, did not respond by time of publication.

From Los Angeles Times • Jun. 3, 2026

A few days ago we were all talking about the protesters’ claim that maggots were in the food served to inmates, which Homeland Security denied.

From The Wall Street Journal • Jun. 1, 2026

Since the start of the detainees strike, the Department of Homeland Security has denied there’s an ongoing hunger strike.

From Salon • May 30, 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