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Viruses Small infectious agents that reproduce inside the cells of living organisms, often causing diseases. ■ "I'm telling you, my computer is running slower because it's infected with a virus. I bet if I install some antivirus software, it will be as fast as lightning!"
disinfectant A chemical substance that kills or neutralizes harmful bacteria, viruses, and other microorganisms. Also known as an antiseptic or germicide. ■ I accidentally spilled coffee on my shirt and had to use a disinfectant to kill the stains.
adenoids A collection of soft, glandular tissue located in the back of the throat. These glands produce mucus which helps to filter out harmful bacteria and viruses from the air we breathe. ■ "I'm sorry, I have really bad adenoids right now. It's like someone is constantly blowing their nose in my face."
infection A contagious disease or illness caused by the presence and spread of microorganisms, such as bacteria, viruses, or fungi. ■ After catching a cold from her sick roommate, Sarah was so paranoid about germs that she started washing her hands with soap for 30 seconds every time she touched anything. Even the dog had to be quarantined in their own room!
Monitors A device that displays information or video content, often used in computer systems. ■ When I realized my computer was running slow, I checked the monitors to see if there were any viruses running on them. To my surprise, the only thing on the screens was a picture of me eating a whole pizza by myself!