MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Witkop syndrome
A genetic disorder characterized by the absence of several teeth at birth and abnormalities of the nails. The disorder is also known as hypodontia and nail dysgenesis or, more picturesquely, as the tooth and nail syndrome (TNS). The tooth…
Read the definitionRandom terms
Show more- Diploe The soft spongy material between the inside table and outside table (the interior and exterior bony plates)…
- Arthroscopic Refers to a surgical technique whereby a doctor inserts a tube-like instrument into a joint to inspect…
- Conn syndrome Overproduction of the hormone aldosterone (pronounced al-do-ster-one) by a tumor that contains tissue…
- Endoscopic papillotomy See: Endoscopic sphincterotomy
- Hypochondriasis The belief and fear of serious illness which lasts for six months, beyond and despite medical reassurance…
- Ventriculopleural shunt A shunt that drains fluid from a cerebral ventricle into the pleural (chest) cavity. The shunt is designed to…
- Polycyclic aromatic hydrocarbon Abbreviated PAH. A hydrocarbon (a molecule made up of hydrogen and carbon) containing two or more closed…
- Stereotactic needle biopsy A biopsy in which the spot to be biopsied is located three-dimensionally, the information is entered into a…
- Sinus arrhythmia The normal increase in heart rate that occurs during inspiration (when you breathe in). This is a natural…
- Threonine An amino acid, one of the 20 building blocks of protein. A dietary essential amino acid, threonine is…
- Hepatosplenomegaly Enlargement of the liver and spleen. The word 'hepatosplenomegaly' is compounded from Greek roots: 'hepato-'…
- Version 1. In obstetrics, the process of turning the fetus. A cephalic version brings the fetal head into the birth…