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).
Twenty-twenty
Perfectly normal vision. From the ability to score 20/20 on the test of visual acuity with the eye chart. This familiar chart, called Snellen's chart after its inventor, is usually read while standing a distance of 20 feet from it. Visual…
Read the definitionRandom terms
Show more- Triphalangeal Having three phalanges in a digit normally composed of only two
- PINK1 Also called conjunctivitis. Redness or irritation of the conjunctivae, the membranes on the inner part of the…
- ARMD Age-related macular degeneration (which may also be abbreviated as AMD)
- Post-exposure prophylaxis A treatment administered following exposure to a harmful agent which attempts to block or reduce injury or…
- Wasp sting A sting from a wasp, like that of other large stinging insects such as bees, hornets and yellow jackets…
- Toe sign An important neurologic examination based upon what the toes do when the sole of the foot is stimulated. If…
- Positive clinical trial A clinical trial that shows that the new treatment has a large beneficial effect and is superior to standard…
- Achlorhydria A lack of hydrochloric acid in the digestive juices in the stomach (in technical terms, so that the pH of the…
- Infraspinatus muscle >The infraspinatus muscle; >The teres minor muscle, which (like the infraspinatus muscle) helps in the…
- Formula, infant A substitute for breast milk for feeding infants. Pediatricians generally advise exclusively breastfeeding…
- Sinus arrhythmia The normal increase in heart rate that occurs during inspiration (when you breathe in). This is a natural…
- Craniometaphyseal dysplasia An inherited skeletal condition that involves abnormal bone formation and abnormal mineralization of the…