Jump To:

• 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

---

homeland security ² British  

noun

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

---

Example Sentences

In one of the last decision days of the season, the Supreme Court ruled 6-3 in favor of the Department of Homeland Security in Mullin v.

From Salon • Jun. 27, 2026

Under the law, the Department of Homeland Security may grant this protection for 6, 12 or 18 months and either renew or extend it for a similar period.

From Los Angeles Times • Jun. 25, 2026

The surge in Department of Homeland Security agents also led to a 1.9% decline in hours worked and a 1.7% decline in businesses in operation during that period.

From Barron's • Jun. 25, 2026

“Are we serious about enforcing these sanctions or not?” said Elaine Dezenski, a former senior Department of Homeland Security official now at the Foundation for Defense of Democracies, a Washington think tank.

From The Wall Street Journal • Jun. 21, 2026

They were from the Department of Homeland Security, they said.

From "Zeitoun" by Dave Eggers