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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Diaphragm (muscle)
The muscle that separates the chest (thoracic) cavity from the abdomen. The diaphragm is the main muscle of respiration. Contraction of the diaphragm muscle expands the lungs during inspiration when one is breathing air in. We rely heavily…
Read the definitionRandom terms
Show more- Vitamin K One of two naturally occurring fat-soluble vitamins (vitamin K1 and vitamin K2) needed for the clotting of…
- Androgenic Pertaining to the development of male characteristics, including body hair, the genital organs and muscle…
- Pediatric arthritis See: Arthritis, systemic-onset juvenile rheumatoid
- Diabetes, insulin-resistant An autoimmune form of diabetes, in which the body develops an immune response to its own insulin hormone…
- Heberden node A small fixed bump on the finger, usually at the last joint of the finger, Heberden's node is a calcified…
- Library of Medicine, National (NLM) The world's largest medical library, the U.S. National Library of Medicine (NLM) is part of the National…
- BSL-2 Biosafety level 2. A level of biosafety considered appropriate for agents that can cause human disease, but…
- Disease, Rendu-Osler-Weber See: Hereditary hemorrhagic telangiectasia
- Lymph node, sentinel The first lymph node ('gland') to receive lymphatic drainage from a tumor. Which lymph node is the sentinel…
- Opiate agonist maintenance See: Methadone treatment program
- Ocular histoplasmosis syndrome An eye disease that is a leading cause of vision loss, due to the spread of spores of the fungus Histoplasma…
- HAVS Hand-arm vibration syndrome