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).
Rheumatoid factor
Rheumatoid factor: Rheumatoid factor is an antibody that is measurable in the blood. It is commonly used as a blood test for the diagnosis of rheumatoid arthritis. Rheumatoid factor is present in about 80% of adults (but a much lower…
Read the definitionRandom terms
Show more- Vasoconstriction Narrowing of the blood vessels resulting from contracting of the muscular wall of the vessels. The opposite…
- Wesand See: Weasand
- Toxicogenomics The collection, interpretation, and storage of information about gene and protein activity in order to…
- RTS See Rett syndrome.
- Illusion A perception that occurs when a sensory stimulus is present but is incorrectly perceived and misinterpreted…
- Encephalitis, West Nile A febrile disease caused by the West Nile virus that is transmitted from birds to the common Culex mosquito…
- Peritoneum The membrane that lines the abdominal cavity and covers most of the abdominal organs. (From the Greek peri-…
- Stepmother The wife of a man who had a child by another women. See: Novercal
- Irwin DJ Bross See: Bross, Irwin DJ
- Tachycardia A rapid heart rate, usually defined as greater than 100 beats per minute. The tachycardias include sinus…
- Infection, middle ear Acute middle ear infection, medically called acute otitis media is inflammation of the middle ear. Acute…
- Depression Depression: An illness that involves the body, mood, and thoughts, that affects the way a person eats and…