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).
Beta-agonist
A bronchodilator medicine that opens the airways by relaxing the muscles around the airways that may tighten during an asthma attack or in COPD (chronic obstructive pulmonary disease). Beta-agonists can be administered by inhalers or…
Read the definitionRandom terms
Show more- Congenital webbed neck syndrome See: Klippel-Feil sequence
- Plummer-Vinson syndrome Iron deficiency anemia, esophageal webs, and dysphagia (difficulty swallowing). The iron deficiency is…
- Myalgia, epidemic Also known as Bornholm disease, this is a temporary illness that is a result of virus infection. The disease…
- Chromatin remodelling See: Chromatin remodeling
- Shots, allergy Known medically as allergy desensitization or allergy immunotherapy, the injections are designed to stimulate…
- Renal Fanconi syndrome Failure of the tubules in the kidney to reabsorb small molecules, causing increased urinary loss of…
- Osteopathy A system of therapy founded in the 19th century based on the concept that the body can formulate its own…
- Lymph An almost colorless fluid that travels through vessels called lymphatics in the lymphatic system and carries…
- Novercal Stepmotherly; pertaining to a stepmother. From the Latin novercalis, from noverca meaning stepmother
- Syndrome, Guillain-Barre See: Guillain-Barre syndrome
- Pericardium The conical sac of fibrous tissue that surrounds the heart and the roots of the great blood vessels. The…
- Myelin The fatty substance that covers and protects nerves. Myelin is a layered tissue that sheathes the axons…