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).
Aneurysm, racemose
An aneurysm is a localized widening (dilatation) of an artery, vein, or the heart. At the area of an aneurysm, there is typically a bulge and the wall is weakened and may rupture. The word 'aneurysm' comes from the Greek 'aneurysma'…
Read the definitionRandom terms
Show more- Vaccination, pneumococcal pneumonia
- Fallopian tube One of the two Fallopian tubes that transport the egg from the ovary to the uterus (the womb). In the…
- Downregulation An decrease in the number of receptors on the surface of target cells, making the cells less sensitive to a…
- Gas chromatography (GC) A type of automated chromatography (a technique used to separate mixtures of substances) in which the mixture…
- Regress To return or go back, particularly to return to a pattern of behavior or level of skill characteristic of a…
- Partial syndactyly A condition in which fingers or toes are partially joined together. Syndactyly can involve the bones or just…
- Primary amenorrhea Absence of menstruation. Amenorrhea is conventionally divided into primary and secondary amenorrhea. With…
- Depression, major Depression, major: A disease that interferes with the ability to work, sleep, eat, and enjoy once pleasurable…
- Entomology The scientific study of insects. The application of entomology to medicine is termed medical entomology. See…
- Nitrosoureas A group of cancer drugs called alkylating agents because they act by the process of alkylation to inhibit DNA…
- Tuberculosis, MDR Multidrug-resistant tuberculosis. See: Tuberculosis, antibiotic-resistant
- T cell A type of white blood cell that is of key importance to the immune system and is at the core of adaptive…