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).
Reaction, allergic
A reaction that occurs when the immune system attacks a usually harmless substance (an allergen) that gains access to the body. The immune system calls upon a protective substance called immunoglobulin E (IgE) to fight these invading…
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Show more- Medicins Sans Frontieres A group which sends physicians and other health workers to some of the most destitute and dangerous parts of…
- Vertebral column The 33 vertebrae fit together to form a flexible, yet extraordinarily tough, column that serves to support…
- Comorbidity The coexistence of two or more disease processes.
- Acetylcholinesterase An enzyme that breaks down the neurotransmitter acetylcholine at the synaptic cleft (the space between two…
- Periodontics Periodontics is the branch of dentistry concerned with the prevention, diagnosis and treatment of diseases…
- Hemangioma, hepatic A common benign tumor of the liver made up of small blood vessels. Hepatic hemangioma is the most common…
- Disease, Parkinson A slowly progressive neurologic disease characterized by a fixed inexpressive face, a tremor at rest, slowing…
- Joint, acromioclavicular The acromioclavicular (AC) joint is located between the acromion (a projection of the scapula that forms the…
- Arthritis, reactive Arthritis, reactive: Reiter's syndrome is also called 'reactive arthritis' since it is thought to involve the…
- Aggressive In oncology, quickly growing, tending to spread rapidly. As, for example, an aggressive tumor
- Aristolochic acid A chemical found in nature in the plant Aristolochia fangchi. Aristolochic acid is contained in a number of…
- Single base change A change in which a single base in the DNA differs from the usual base at that position. These single base…