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).
Na (sodium)
Na is the chemical symbol for sodium. From natrium, a synonym for sodium. Sodium is the major positive ion (cation) in fluid outside of cells. The chemical notation for sodium is Na+. When combined with chloride (Cl), the resulting…
Read the definitionRandom terms
Show more- Benzo(a)pyrene Abbreviated B(a)P. A member of a class of compounds known as polycyclic aromatic hydrocarbons (PAHs). B(a)P…
- Syndrome of ichthyosis, spasticity, oligophrenia A: Also known as the Sjogren-Larsson syndrome, this is a genetic (inherited) disease characterized by a triad…
- Immunization, rubella See Immunization, MMR.
- Morbilli Another name for measles, an acute highly contagious viral disease with fever, runny nose, cough, red eyes…
- Integrin One of a large and very important family of adhesion molecules that promote stable interactions between cells…
- Fee for service ): In health care, a payment mechanism in which a provider is paid for each individual service rendered to a…
- Sentinel-lymph-node biopsy See: Sentinel lymph node biopsy
- Idiot savant See: Autistic savant. The term 'autistic savant' is preferred to the old term 'idiot savant' as less…
- Colon cancer risk See: Colon cancer family history
- Anthrax =4 cel ODYvAlign=top bgColor=#cccccc colSpan=2> vAlign=top width='100%' bgColor=#ffffff>Our Anthrax Main…
- Serum The clear liquid that can be separated from clotted blood. Serum differs from plasma, the liquid portion of…
- Osteogenesis, electrically stimulated Bone growth caused by implanting electrodes in an area of bone and sending electrical current to them. This…