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).
Background radiation
Radiation that comes from environmental sources including the earth's crust, the atmosphere, cosmic rays, and radioisotopes. Natural sources of radiation account for the largest amount of radiation exposure received by most people each…
Read the definitionRandom terms
Show more- Piles 1. A term in use since the 15th century for hemorrhoids. 2. A street name for crack cocaine
- Migraine, menstrual See: Menstrual migraine
- Dystonia, laryngeal See: Spasmodic dysphonia
- Reactive oxygen species Species such as superoxide, hydrogen peroxide, and hydroxyl radical. At low levels, these species may…
- Hepatitis B immunization Hepatitis B immunization: Hepatitis B (hep B) vaccine gives prolonged protection, but 3 shots over a half…
- Sir Charles Bell See: Bell, Charles
- ALS8 See: Amyotrophic lateral sclerosis 8
- African sleeping sickness Also called African trypanosomiasis, a systemic disease caused by the parasite Trypanosoma brucei that is…
- Transvestitism Transvestitism, or transvestic fetishism, refers to the practice by heterosexual males of dressing in female…
- Illness, altitude >If possible, don't fly or drive to high altitude. Start below 10,000 feet (3,048 meters) and walk up. >If…
- Test, rapid strep A diagnostic test commonly used to demonstrate whether streptococcus bacteria ('strep') are present in the…
- Chronic kidney failure See: Chronic renal failure