6 days ago · Antibiotic, chemical substance produced by a living organism, generally a microorganism, that is detrimental to other microorganisms. Antibiotics came into worldwide prominence with the …

: a substance produced by an organism (as a fungus or bacterium) that in dilute solution inhibits or kills a harmful microscopic plant or animal and especially one that causes disease. Note: While antibiotics …

In current usage, the term "antibiotic" is applied to any medication that kills bacteria or inhibits their growth, regardless of whether that medication is produced by a microorganism or not. [27][28]

ANTIBIOTIC definition: 1. a medicine or chemical that can destroy harmful bacteria in the body or limit their growth: 2…. Learn more.

A substance that destroys or inhibits the growth of microorganisms and is therefore used to treat some infections. One of the most familiar antibiotics is penicillin.

Apr 17, 2023 · Antibiotics are medicines that fight bacterial infections in people and animals. They work by killing the bacteria or by making it hard for the bacteria to grow and multiply.

Apr 14, 2025 · Unlike antiviral drugs, which target viruses, or antifungals, which treat fungal infections, antibiotics specifically work against bacteria—organisms that are alive, single-celled, and can …

Antibiotics are powerful medicines used to treat certain illnesses. However, antibiotics do not cure everything, and unnecessary antibiotics can even be harmful.

Mar 13, 2024 · Antibiotics help fight bacterial infections by killing bacteria or stopping them from multiplying. They've been around since the early 1900s, making surgeries safer and increasing life …

Antibiotics are medications used to treat bacterial infections. They are not effective against viral infections and most other infections. Antibiotics either kill bacteria or stop them from reproducing, …