MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
The most complete online medical dictionary: 16,436 terms covering anatomy, physiology, pathologies, diagnostic exams, pharmacology and every clinical specialty.
Designed for 3 kinds of users:
- Patients and family who want to understand a diagnosis, a medical report or instructions from a doctor.
- Students of medicine, nursing, physiotherapy and the health professions, dealing with technical terminology.
- Doctors, pharmacists and healthcare workers who need a quick and reliable reference.
Definitions are written in clear, accessible language while keeping the rigor required for professional use. Each term has a dedicated URL, instant autocomplete search, and can be shared on WhatsApp, Facebook, X and via email with one click.
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Disclaimer: the content is for informational and educational purposes only and does not replace medical advice. If you have doubts about your health, always consult a qualified professional. In case of emergency call your local emergency number (911 in the US, 112 in the EU).
Headache
Headache: A pain in the head with the pain being above the eyes or the ears, behind the head (occipital), or in the back of the upper neck. Headache, like chest pain or back ache, has many causes. All headaches are considered primary…
Read the definitionRandom terms
Show more- Juvenile chronic arthritis, systemic-onset See: Arthritis, systemic-onset juvenile rheumatoid
- Chronicity Characterized by long duration. The state of being chronic
- Environmental tobacco smoke Abbreviated ETS. Secondhand smoke. See: ETS.
- Thallium scan A method of examining the heart to obtain information about the blood supply to the heart muscle. In the…
- Gamma globulin A major class of immunoglobulins found in the blood, including many of the most common antibodies circulating…
- Anastrozole An oral antiestrogen. Anastrozole inhibits the enzyme aromatase in the adrenal glands that produces the…
- Disease, Legionnaire A disease due to the bacteria Legionella pneumophila found in plumbing, shower heads and water-storage tanks…
- Diffuse cutaneous mastocytosis See: Diffuse mastocytosis
- Gallbladder agenesis This is a condition in which the gallbladder fails to develop. This happens in approximately one out of every…
- Brachial plexus >Avulsion, the most severe type, in which the nerve is torn from the spine; >Rupture, in which the nerve is…
- Disease, polycystic kidney See Polycystic kidney disease
- Reportable disease A disease that must be reported to federal, state, or local health officials when diagnosed. Reportable…