Antivirus (noun)

A program or set of programs that are designed to prevent, search for, detect, and remove software viruses and other malicious software like worms, trojans, adware, and more.

Origin:

From anti- + virus.

Examples:

1. I installed an antivirus on my computer to protect it from malware.
2. The antivirus software scanned my entire computer and found a few viruses that it removed.
3. It is important to regularly update your antivirus program to ensure maximum protection.
4. I received a warning from my antivirus program that a website I was trying to visit was potentially dangerous.
5. Many antivirus programs also include a firewall to protect your computer from hackers.