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Medical and Science Glossaries

The following glossaries contain definitions to terms related to rare and/or genetic diseases, clinical research, and general health topics. Unless otherwise noted, the glossaries are in English language only.

Genetic Terms
Disease-Specific Glossaries
Clinical Research
General Health Topics

Source	Dictionary Name	Description	Language
Genetic Terms
National Cancer Institute	NCI's Dictionary of Genetic Terms	Genetic terms developed by the PDQ Cancer Genetics Editorial Board to support the evidence-based, peer-reviewed PDQ cancer genetics information summaries.
National Human Genome Research Institute	NHGRI’s Talking Glossary of Genetic Terms	Terms used in genetic research – many definitions include images, animation and links to related terms	English Spanish
GeneReviews	Illustrated Glossary	Term and definitions – many include case examples.
National Institute of General Medical Sciences	The New Genetics Glossary	Terms used in the National Institute of General Medical Sciences science education booklet entitled “The New Genetics”.
Disease-Specific Glossaries
National Cancer Institute	NCI Dictionary of Cancer Terms	Cancer Terms	English Spanish
National Institute of Allergy and Infectious Diseases	Health & Research Topics A-Z	Allergy and infectious disease health and research topics	English Spanish
National Institute on Deafness and Other Communication Disorders	Glossary	Glossary of medical terms for deafness and other communication disorders
National Heart, Lung, and Blood Institute	NHLBI’s Health Topics	Definitions related to heart, lung, and blood diseases and conditions and sleep disorders.
Clinical Research
National Institute of Neurological Disorders and Stroke	NINDS Glossary of Clinical Research Terms	Terms related to clinical research
ClinicalTrials.gov	Glossary	Terms related to clinical research
NIH Office of Extramural Research	Grants and Funding Glossary & Acronym List	Terms related to NIH grants and funding
General Health Topics
National Library of Medicine	MedlinePlus Health Topics	Definitions for many health conditions	English Spanish
National Library of Medicine	Medical Dictionary	Medical dictionary by Merriam-Webster Inc.
National Center for Complementary and Alternative Medicine	Health Topics A-Z	Glossary that includes terms for complementary and alternative medicine