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).
Muscle, piriformis
A muscle that begins at the front surface of the sacrum (the V-shaped bone between the buttocks at the base of the spine) and passes through the greater sciatic notch to attach to the top of the thigh bone (femur) at its bony prominence…
Read the definitionRandom terms
Show more- Pancreatitis, acute See: Acute pancreatitis
- Topical chemotherapy Chemotherapy: Treatment with an anticancer drug in a lotion, ointment or cream that is applied to the skin.
- Flatfeet A condition of the feet in which the arch of the instep is flattened and the entire sole touches the ground…
- Adenopathy Large or 'swollen' lymph nodes. Synonymous with lymphadenopathy
- Syndrome, temporomandibular joint Disorder of the temporo-mandibular joint (TMJ) causing pain usually in front of the ear. Pain in the TMJ can…
- Pancreas, artificial A machine that constantly measures glucose (sugar) in the blood and, in response to an elevated level of…
- Hyperemesis gravidarum Excessive vomiting in early pregnancy. Hyperemesis gravidarum, by definition, leads to the loss of 5% or more…
- Renal artery stenosis Renal artery stenosis: Narrowing of the major artery that supplies blood to the kidney. Renal artery stenosis…
- QALY Quality adjusted life year, a year of life adjusted for its quality or its value. A year in perfect health is…
- Niacin for high cholesterol Niacin or nicotinic acid, one of the water-soluble B vitamins, given to lower cholesterol. Nicotinic acid…
- Cranial nerve VIII The eighth cranial nerve is the vestibulocochlear nerve. The vestibulocochlear nerve is responsible for the…
- ALS1 See: Amyotrophic lateral sclerosis 1