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NCI Dictionaries

NCI Dictionary of Cancer Terms
A dictionary of cancer and biomedical terms defined in non-technical language. Terms and definitions are reviewed by a multidisciplinary panel of reviewers and new terms are added each month.

NCI Dictionary of Genetics Terms
A dictionary of genetics terms written for healthcare professionals. This resource was developed to support the comprehensive, evidence-based, peer-reviewed PDQ cancer genetics information summaries.

NCI Drug Dictionary
The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.