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).
Vasovagal reaction
A reflex of the involuntary nervous system that causes the heart to slow down (bradycardia) and that, at the same time, affects the nerves to the blood vessels in the legs permitting those vessels to dilate (widen). As a result the heart…
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Show more- Appendicitis Appendicitis: Inflammation of the appendix, the small worm-like projection from the first part of the colon…
- Knuckle The dorsal aspect of the flexed metacarpophalangeal joint. Knuckle may be shorter and simpler to say.
- Carcinoma, ampullary Cancer of a structure called the ampulla of Vater, a small muscle located at the junction where the common…
- Aerotitis media See Aerotitis
- Multipara, grand The term 'multipara' applies to any woman who has given birth 2 or more times. A woman who has given birth 5…
- Signature 1) That part of the prescription that contains the doctor's directions to the patient. For example, the…
- Upper GI series Upper GI series: A series of x-rays of the esophagus, stomach, and small intestine (upper gastrointestinal…
- Gestation period The period of development of the young from the time of conception until birth. For humans the full gestation…
- Elevated hemidiaphragm Elevation of half of the diaphragm, the muscle that separates the chest cavity from the abdomen and that…
- Spinal stenosis Narrowing of the spaces in the spine, resulting in compression of the nerve roots or spinal cord by bony…
- Biosafety level A specific combination of work practices, safety equipment, and facilities which are designed to minimize the…
- TSE Abbreviation for Transmissible spongiform encephalopathy