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).
Hemophagocytic lymphohistiocytosis
A rare, cancer-like disorder in which both histiocytes and lymphocytes start to proliferate and attack body tissues or organs. It can be an inherited condition, or it can occur as a result of immunosuppression (as in organ transplants) or…
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Show more- Necrobiosis lipoidica diabeticorum A dull red raised area on the skin that evolves into a shiny scar with a violet border, most often on the…
- Triceps The triceps muscle extends (straightens) the elbow. Its full name is the triceps brachii. It can be felt as…
- RLL Acronym for the right lower lobe (of the lung). The right lung has three lobes: the right upper lobe (RUL)…
- SA node The SA node (SA stands for sinoatrial) is one of the major elements in the cardiac conduction system, the…
- Congenital ptosis of the eyelids Drooping of the upper eyelids at birth. The lids may droop only slightly or they may cover the pupils and…
- Hemophobia An abnormal and persistent fear of blood. Sufferers of this very common phobia dread the sight of their own…
- Siddha medicine An ancient system of medicine prevalent in South India. The word Siddha comes from the Tamil word for…
- Bradypnea (Pronounced brad-ip-nea.) Abnormally slow breathing. A respiratory rate that is too slow. The normal rate of…
- Ozone A form of oxygen that consists of three atoms of oxygen, in contrast to normal atmospheric oxygen which…
- Reflex, patellar tendon See: Knee jerk
- Filovirus A family of viruses that cause hemorrhagic fever. Filoviruses have single- stranded RNA as their genetic…
- Family physician A physician who is educated and trained in family practice. 'Family physicians possess unique attitudes…