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.
- 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).
HER2
Abbreviation for human epidermal growth factor receptor 2. HER2 is expressed by, and involved in the growth of, some cancer cells. For example, a minority of breast cancers express HER2 protein. Also called c-erbB-2.
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Show more- Protein requirements, infant Proteins contain different amino acids that are linked together. Proteins provide both calories and the amino…
- CXCR4 A chemokine receptor found on a wide variety of cells that serves as the coreceptor for HIV. HIV strains that…
- Munchhausen by proxy See: Munchhausen syndrome by proxy
- Cyanosis A bluish color of the skin and the mucous membranes due to insufficient oxygen in the blood. For example, the…
- Cranial nerve IX The ninth cranial nerve is the glossopharyngeal nerve. The 12 cranial nerves, the glossopharyngeal nerve…
- Phenylketonuria Phenylketonuria: The inherited inability to metabolize (process) the essential amino acid phenylalanine due…
- Pain, elbow Elbow pain is most often the result of tendinitis, which can affect the inner or outer elbow. Treatment…
- Hemorrhage Bleeding or the abnormal flow of blood. The patient may have an internal hemorrhage that is invisible or an…
- Cholangi- Relating to a bile duct. From the Greek chole meaning bile + a(n)geion meaning a vessel = a bile vessel
- Membranous gingivitis, acute This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead…
- Lithotomy Surgical removal of a stone, especially a kidney or bladder stone. From the Greek roots litho-, stone + tome…
- Anticipation A remarkable phenomenon in which a genetic disease appears earlier appearance and with increased from with…