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).
Histiocytosis, Langerhans cell
Histiocytosis in which the active histiocytes normally occur in the skin. See histiocytosis.
Read the definitionRandom terms
Show more- Transitional cell carcinoma A type of cancer that develops in the lining of the renal pelvis, ureter or bladder
- Metacarpals Five cylindrical bones extending from the wrist to the fingers.
- Somatostatin A hormone widely distributed throughout the body, especially in the hypothalamus and pancreas, that acts as…
- Osteopathy A system of therapy founded in the 19th century based on the concept that the body can formulate its own…
- Substance 1. Material with particular features, as a pressor substance.2. The material that makes up an organ or…
- Bursitis, hip Inflammation of a bursa of the hip joint. A bursa is a fluid-filled sac that functions as a gliding surface…
- Barlow syndrome Barlow syndrome is mitral valve prolapse (also known as 'click murmur syndrome'), the most common heart valve…
- Levite A member of an ancient caste of hereditary Jewish priests. Membership in the Levites is determined by…
- Tendon The tissue by which a muscle attaches to bone. A tendon is somewhat flexible, but fibrous and tough. When a…
- Nat'l Institute of Allergy and Infectious Disease (NIAID): One of the U.S. National Institutes of Health (NIH), the mission of the NIAID is 'to support and…
- Mediastinotomy A procedure in which the doctor inserts a tube into the chest to view the organs in the mediastinum. The tube…
- Modeling, chromatin See: Chromatin remodeling