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).
Sign
Any objective evidence of disease. Gross blood in the stool is a sign of disease. It can be recognized by the patient, doctor, nurse, or others. In contrast, a symptom is, by its nature, subjective. Abdominal pain is a symptom. It is…
Read the definitionRandom terms
Show more- Medicine, homeopathic See: Homeopathy
- Radionuclide scan An examination that produces pictures of internal parts of the body. The patient is given an injection or…
- Sulcus A groove, crevice, or furrow. In medicine, there are many sulci (plural of sulcus) as, for example, the…
- Sjogren syndrome Sjogren syndrome: An autoimmune disease that classically combines dry eyes, dry mouth, and another disease of…
- Tritiated Containing atoms of tritium (hydrogen-3) in the place of hydrogen (H) in a molecule. See also: Tritiated…
- Choking (object in airway) Partial or complete obstruction of the airway can be due to a foreign body (e.g., food, a bead, toy, etc.)…
- GHB Known in Europe as Gamma-OH, this is gamma hydroxybutyrate, a colorless and odorless drug used illicitly for…
- CMV (cytomegalovirus) A virus that infects 50-85% of adults in the US by age 40 and is also the virus most frequently transmitted…
- Symmetric lipomatosis, multiple A disorder characterized by painless symmetrical diffuse deposits of fat beneath the skin of the neck, upper…
- Anderson-Fabry disease See: Fabry disease
- Acute phase reactant See: Acute-phase protein
- Banding of chromosomes The treatment of chromosomes to reveal characteristic patterns of horizontal bands like bar codes. The…