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).
MELAS syndrome
MELAS syndrome: MELAS is the acronym for Mitochondrial Encephalopathy, Lactic Acidosis, and Stroke-like episodes. MELAS is a rare form of dementia. It is caused by mutations in the genetic material (DNA) in the mitochondria. While most of…
Read the definitionRandom terms
Show more- Ear, internal There are three sections of the ear. They are the external ear, the middle ear, and the internal ear. The…
- Urine blood Blood in the urine. Also called hematuria. Gross hematuria refers to blood that is so plentiful in the urine…
- Implant, brainstem See: Brainstem implant
- Eosinophilic leukocyte See: Eosinophil
- Outlet, gastric See: Gastric outlet
- Hepatitis, toxic Hepatitis (inflammation of the liver) caused by an industrial chemical such as carbon tetrachloride or…
- DNA assembly The process of putting fragments of DNA that have been sequenced into their correct chromosomal positions…
- Injury, scooter See: Scooter injury
- Spongiform encephalopathy and cerebral amyloidosis See: Gerstmann-Straussler-Scheinker syndrome
- Doppler ultrasound A form of ultrasound that can detect and measure blood flow. Doppler ultrasound depends on the Doppler…
- Memory span The number of items, usually words or numbers, that a person can retain and recall. Memory span is a test of…
- Blister beetle A blister beetle is one of a number of beetles that have historically been used in dried or powdered form for…