MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Arthritis, systemic-onset juvenile rheumatoid
A form of joint disease in children whose systemic signs and symptoms include high intermittent fever, a salmon-colored skin rash, swollen lymph glands, enlargement of the liver and spleen, inflammation of the lungs (pleuritis), and…
Read the definitionRandom terms
Show more- Wilson disease Women. A late 20th century creation. A feminist spelling to avoid the suffix men.
- Fusospirochetal gingivitis This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead…
- Pupil The opening of the iris. The pupil may appear to open (dilate) and close (constrict) but it is really the…
- Abuse, psychological child Also known as emotional child abuse, this is the third most frequently reported form of child abuse (after…
- Arthralgia Pain in the joints. There are many possible causes of pain in a joint. The Greek 'algos' means 'pain.
- Efferent Carrying away. An artery is an efferent vessel carrying blood away from the heart. An efferent nerve carries…
- Medium-chain acyl-CoA dehydrogenase An enzyme abbreviated as MCAD. See: MCAD deficiency
- Anomia A problem with word finding. Impaired recall of words with no impairment of comprehension or the capacity to…
- Bacillus A large family of bacteria that have a rod-like shape. They include the bacteria that cause food to spoil…
- Mold A very large group of microscopic fungi that live on plant or animal matter. Most are filamentous organisms…
- Lindane An organochlorine pesticide and nerve poison. Also a suspected carcinogen (cancer-causing agent). Although…
- Oxygen tent A tent-like device used to deliver high levels of oxygen to a patient in a bed. The tent typically covers the…