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).
Contraction
The tightening and shortening of a muscle
Read the definitionRandom terms
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- River blindness Onchocerciasis, a disease caused by a parasitic worm (Onchocerca volvulus) which is transmitted to persons by…
- Meningomyelocele Protrusion of the membranes that cover the spine but some of the spinal cord itself through a defect in the…
- Psoralen photochemotherapy See: PUVA
- Heebie-jeebies Extreme nervousness. A term coined by the America cartoonist Billy DeBeck (1890-1942) in his comic strip…
- Computed tomography colography See: Virtual colonoscopy
- Radioactive tracer A radioactive molecule that can be sent through the body's circulatory or urinary system, with its progress…
- Gamma linolenic acid See: Gamma-linolenic acid
- Parasympathetic nervous system A part of nervous system that serves to slow the heart rate, increase the intestinal and gland activity, and…
- ECST ECST stands for the exercise cardiac stress test, the most widely used cardiac (heart) screening test. In an…
- Recalls, FDA Recalls: The recall of a defective or possibly harmful product by the US Food & Drug Administration (the…