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).
Beta adrenergic blocking agents
A class of drugs, also called beta blockers, that block beta-adrenergic substances such as adrenaline (epinephrine), a key agent in the 'sympathetic' portion of the autonomic (involuntary) nervous system. By blocking the action of the…
Read the definitionRandom terms
Show more- Beat, premature See: Extrasystole
- Renal pelvis The area at the center of the kidney. Urine collects here and is funneled into the ureter
- Leukemic reticuloendotheliosis See: Hairy cell leukemia
- Alstrom-Hallgren syndrome See: Alstrom syndrome
- Hantavirus A group of viruses that cause hemorrhagic fever and pneumonia. The Hantaviruses include the Hantaan virus…
- Edward B. Lewis See: Lewis, Edward B
- Medulla The innermost part. The adrenal medulla is the innermost part of that gland. The renal medulla is the inner…
- Facelift Although infrequent, the risks and complications of facelift surgery include: bleeding, hematoma, bruising…
- Doctors Without Borders A group which sends physicians and other health workers to some of the most destitute and dangerous parts of…
- Pick disease Pick disease: A form of dementia characterized by a slowly progressive deterioration of social skills and…
- R (symbol) This much-used symbol has many meanings in medicine. They include: > >Respiration: a nurse's note of 'R20' is…
- Practice, family The medical specialty which provides continuing and comprehensive health care for the individual and family…