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.
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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).
E. coli O157:H7
A dangerous form of Escherichia coli, the colon bacillus, a bacterium that normally lives in the human colon. E. coli 0157:H7 is a major health problem, causing hemorrhagic colitis, the hemolytic-uremic syndrome, and thrombotic…
Read the definitionRandom terms
Show more- Ventilation The exchange of air between the lungs and the atmosphere so that oxygen can be exchanged for carbon dioxide…
- RNA polymerase A polymerase is an enzyme that catalyzes the joining of many smaller molecules (called monomers) to form a…
- Single transverse palmar line Simian crease
- Anthropology, forensic Forensic: See: Forensic anthropology
- BSL-1 Biosafety level 1. The lowest level of biosafety, a level that applies to agents that do not ordinarily cause…
- Syndrome, Pisa A condition in which there is sustained involuntary flexion of the body and head to one side and slight…
- Newborn intensive care unit An intensive care unit designed for premature and ill newborn babies. Abbreviated NICU. Also called a…
- Nonblinded study A clinical trial or other experiment in which the researchers know what treatments are being given to each…
- Minor A minor is someone who is not yet an adult and, in a larger sense, it is something that is less than…
- Fistula, anal See: Anal fistula
- Triglycerides The major form of fat. A triglyceride consists of three molecules of fatty acid combined with a molecule of…
- P.r.n. Abbreviation meaning 'when necessary' (from the Latin 'pro re nata', for an occasion that has arisen, as…