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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Septum, cardiac
The cardiac septum is the dividing wall between the right and left sides of the heart. That portion of the septum that separates the two upper chambers (the right and left atria) of the heart is termed the atrial (or interatrial) septum…
Read the definitionRandom terms
Show more- Vein of Galen aneurysm A congenital malformation of blood vessels of the brain. Specifically, an arteriovenous (AV) malformation in…
- Anticonvulsant A medication used to control (prevent) seizures (convulsions) or stop an ongoing series of seizures. There…
- Rhinitis, vasomotor Inflammation of the nose (rhinitis) due to abnormal neuronal (nerve) control of the blood vessels in the…
- Xenobiotic Natural substances that are foreign to the body
- Xeroderma pigmentosum A genetic disease characterized by such extraordinary sensitivity to sunlight that it results in the…
- Medical Repository The first medical magazine and the first scientific journal published in the United States. The Medical…
- Eponym Something named after someone. For example, a condition called Shiel's syndrome might be named after someone…
- Prosthodontist A dentist with special training in making replacements for missing teeth or other structures of the oral…
- Leech therapy The use of leeches in medical treatment. Once used as an almost universal cure, leeches were largely…
- Immunoglobulin M Abbreviated IgM. A major class of immunoglobulins. IgM includes the antibodies that are usually produced…
- Temporal arteritis Also called giant cell arteritis or cranial arteritis, this is a serious disease characterized by…
- Exstrophy Eversion of a hollow organ at birth. An exstrophic bladder is one that is turned inside out like a rubber…