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).
ACE (angiotensin converting enzyme)
The angiotensins are peptides (substances smaller than proteins) that act as vasoconstricting agents (causing blood vessels to narrow). Narrowing the diameter of the blood vessels sends up the blood pressure. ACE converts angiotensin to…
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Show more- Vitamins >Vitamin A: Retinol. Carotene compounds responsible for transmitting light sensation in the retina of the…
- Duodenitis Inflammation of the duodenum. (The duodenum is the first part of the small intestine.
- Zona 1. A synonym for shingles. 2. Any zone or encircling area. 3. Any area with a specific boundary. Zona, Latin…
- Renal stone A stone in the kidney (or lower down in the urinary tract). Also called a kidney stone. Renal stones are a…
- Fredrickson See: Fredrickson, Donald
- Polony A tiny colony of DNA, about one micron in diameter. The word 'polony' is a contraction of 'polymerase…
- Somatostatin A hormone widely distributed throughout the body, especially in the hypothalamus and pancreas, that acts as…
- Phenylketonuria Phenylketonuria: The inherited inability to metabolize (process) the essential amino acid phenylalanine due…
- Curettage The removal of growths or other material from the wall of a cavity or other surface, as with a curet. A…
- Protozoa A single-cell organism that can only divide within a host organism. Malaria is caused by a protozoa…
- Munchhausen by proxy See: Munchhausen syndrome by proxy
- Bone, blade Familiar term for the scapula, also called the shoulder blade or wing bone, the flat triangular bone at the…