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.
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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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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- Pheromone An agent secreted by an individual that produces a change in the sexual or social behavior of another…
- T-suppressor cell A type of immune cells, also called T8 cells, these cells close down the immune response after it has…
- Mycosis fungoides A type of non-Hodgkin's lymphoma that first appears on the skin. Also called cutaneous T-cell lymphoma.
- Organ A relatively independent part of the body that carries out one or more special functions. The organs of the…
- CPEO with myopathy See: Kearns-Sayre syndrome
- Hygiene hypothesis A hypothesis that states that exposure to allergens in the environment early in life reduces the risk of…
- Muscle relaxant Muscle relaxant is a term usually used to refer to skeletal muscle relaxants (drugs), which act on the…
- Trisomy The presence of three copies of a chromosome rather than the normal two. The most common trisomies in…
- Capillary morphogenesis gene 2 See CMG2
- NIAMS Stands for National Institute of Arthritis and Musculoskeletal and Skin Diseases, one of the National…
- Dupuytren, Guillaume (1777-1835) The leading French surgeon of the early part of the 19th century. Dupuytren reported the…
- African-American See: African American