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).
Tricuspid valve
One of the four heart valves, the tricuspid valve is the first one that blood encounters as it enters the heart. The tricuspid valve stands between the right atrium and right ventricle and allows blood to flow only from the atrium into the…
Read the definitionRandom terms
Show more- LMP Abbreviation for 'last menstrual period.' By convention, pregnancies are dated in weeks starting from the…
- Dysplasia, arteriohepatic Also known as Alagille syndrome, this ia a genetic disorder characterized by jaundice in the newborn period…
- Undulant fever An infectious disease due to the bacteria Brucella that characteristically causes rising and falling fevers…
- Biochemistry The chemistry of biology, the application of the tools and concepts of chemistry to living systems…
- Pinosome A tiny fluid-filled vesicle (bubble) within a cell. Pinosomes are created in the process of pinocytosis in…
- Arteriogram An x-ray of blood vessels, which becomes visible after an injection of contrast solution into the circulation…
- Cell, cone A type of specialized light-sensitive cell (photoreceptor) in the retina of the eye that provide sharp…
- Myasthenia gravis Prefix that denotes a relationship to fungus. From the Greek mykes, meaning fungus.
- Hepatic duct A duct that carries bile from the liver into the common bile duct which conveys it to the duodenum (the upper…
- Lordosis Inward curvature of the spine. Normally, for example, the low back demonstrates lordosis. The spine is not…
- Intravenous pyelogram An x-ray of the kidneys and urinary tract. Structures are made visible by the injection of a substance that…
- Lactate dehydrogenase (LDH) An enzyme that catalyzes the conversion of lactate to pyruvate. This is an important step in energy…