- Glossary of Terms
Glossary of Terms
We know that many of the concepts used on this site can be difficult to understand. For that reason, we have provided you with a glossary to help you make sense of the terms used in Comparative Effectiveness Research. Every word that is defined in this glossary should appear highlighted throughout the Web site. When you come upon a highlighted term and would like to read the full definition, you can either click on the word to visit the glossary or roll your mouse over the word for a pop-up definition.
Definition: A medicine (chemical compound) used to prevent, diagnose, or treat conditions. Some drugs need a prescription from a physician or nurse practitioner and other drugs do not need a prescription.
For example, antibiotics, such as penicillin or tetracycline, are common drugs that are used to treat infections caused by bacteria.