MedicalTerminology DB

1 Definition of drug resistance

Meaning of drug resistance: The failure of cancer cells, viruses, or bacteria to respond to a drug used to kill or weaken them.

The failure of cancer cells, viruses, or bacteria to respond to a drug used to kill or weaken them. The cells, viruses, or bacteria may be resistant to the drug at the beginning of treatment, or may become resistant after being exposed to the drug.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.