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).
Ventricular septal defect (VSD)
Ventricular septal defect (VSD): A hole in the septum (the wall) between the lower chambers of the heart (the ventricles). Ventricular Septal Defect is the most common type of heart malformation (congenital heart disease). At least 1 baby…
Read the definitionRandom terms
Show more- Myokymia Continuous involuntary muscle twitchings that give the appearance of wormlike rippling of muscle. The muscle…
- Prone The first sulfa drug to be discovered. Largely of historic interest today. The discovery was made by the…
- Syndrome, Patau Trisomy 13 syndrome or three chromosome number 13s instead of the normal two. Children with this condition…
- Skin plaque A plaque is a broad, raised area on the skin. Because it is raised, it can be felt (palpated). By definition…
- Colpopexy The use of surgical-quality stitches to bring a displaced vagina back into position against the abdominal wall
- C3 (cervical vertebra) The third cervical (neck) vertebra from the top
- Iron overload Iron overload: Iron overload can damage the heart, liver, gonads and other organs. Iron overload is a…
- Pia mater One of the meninges, the pia mater is the delicate innermost membrane enveloping the brain and spinal cord…
- Beijerinck, Martinus W. (1851-1931) Dutch microbiologist who was the first person to use the term 'virus' for the invisible…
- Seizure, atonic See: Atonic seizure
- Color, skin See: Skin color
- Fetus The unborn offspring from the end of the 8th week after conception (when the major structures have formed)…