Counterterrorism (noun)

1. Actions taken by governments and security forces to prevent or respond to acts of terrorism.
2. Measures taken to counteract terrorism and reduce the threat it poses.
3. Strategies and tactics used to prevent or combat terrorism.
4. The collective efforts of law enforcement and intelligence agencies to prevent acts of terrorism.
5. The branch of security concerned with protecting against and preventing acts of terrorism.

Origin:

From the latin contra + terrorism, meaning 'measures taken to prevent terrorism'.

Examples:

1. The government announced new measures to strengthen its counterterrorism efforts.
2. The counterterrorism unit of the police arrested several suspects in the bombing plot.
3. The country has been criticized for its lack of effective counterterrorism measures.
4. The counterterrorism operation was successful in preventing the attack on the city.
5. The United States has increased its counterterrorism cooperation with other countries in the region.