NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,198 terms related to cancer and medicine.
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- listen (bar-BIH-chuh-rayt)
- A type of drug that causes a decrease in brain activity. Barbiturates may be used to treat insomnia, seizures, and convulsions, and to relieve anxiety and tension before surgery. A barbiturate is a type of central nervous system (CNS) depressant.