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).
Obstructive sleep apnea
Sleep apnea (OSA): Sleep apnea is a breathing disorder characterized by brief interruptions of breathing during sleep. It owes its name to a Greek word, apnea, meaning 'want of breath.' There are two types of sleep apnea: central and…
Read the definitionRandom terms
Show more- Fever, Lassa See: Lassa fever
- Substance, pressor See: Pressor substance
- Library, genomic A collection of DNA clones made from a set of randomly generated overlapping DNA fragments representing the…
- Parthenogenesis Development of a germ cell without fertilization. This is what happens in the formation of ovarian teratomas…
- Exogenous Originating from outside the organism. Insulin taken by a diabetic is exogenous insulin
- Endourologist An endourologist is a urologist with special expertise in navigating, using endoscopic optical instruments…
- Chemofog See: Chemobrain
- Extremophile An organism that lives under extreme conditions. An example of an extremophile is Methanococcus jannaschii, a…
- Polyploid Three or more full sets of chromosomes. A polyploid brain tumor cell might for example have 69 or 92…
- Collagen disease A disease (autoimmune or otherwise) that attacks the collagen or other components of connective tissue, such…
- Phenolphthalein A compound used as a laboratory reagent and acid-base indicator and also used in over-the-counter (OTC)…
- Cirrhosis Cirrhosis: An abnormal liver condition characterized by irreversible scarring of the liver. Alcohol and viral…