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).
Hygiene hypothesis
A hypothesis that states that exposure to allergens in the environment early in life reduces the risk of developing allergies by boosting immune system activity. Conversely, relatively clean environment in early life would sway the immune…
Read the definitionRandom terms
Show more- Gum disease Gum disease: Inflammation of the soft tissue (gingiva) and abnormal loss of bone that surrounds the teeth and…
- Perforation of appendix Rupture of appendix
- Non-inferior clinical trial A clinical trial that shows that a new treatment is equivalent to standard treatment. Also called a…
- Cancer, colon A malignancy that arises from the inner lining of the colon. Most, if not all, of these cancers develop from…
- NvCJD New variant Creutzfeldt-Jakob disease, a human disease thought due to the same infectious agent as bovine…
- Bumps The raised area of a bump or bruise results from blood leaking from these injured blood vessels into the…
- Foreskin and glans, inflammation of the In the uncircumcised male, balanitis (inflammation of the glans, the rounded head of the penis) and posthitis…
- Mediastinum The area between the lungs. The organs in this area include the heart and its large veins and arteries, the…
- Cranio- Insufficient intake of nitrogen-containing food (protein) to maintain a nitrogen balance or nitrogen…
- M protein An antibody or part of an antibody found in unusually large amounts in the blood or urine of patients with…
- Vagus nerve A remarkable nerve that supplies nerve fibers to the pharynx (throat), larynx (voice box), trachea…
- Delta cell, pancreatic A type of cell in the pancreas (the organ of the digestive system located behind the stomach). Within the…