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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Children of the night
Term applied sometimes to children with xeroderma pigmentosum, a genetic disease with such extraordinary sensitivity to sunlight that ordinary sun exposure results in the development of skin cancer at a very early age. Children with…
Read the definitionRandom terms
Show more- Urethroscope A device for examining the inside of the urethra
- Leuk- Prefix meaning white, as in leukemia. Leuk-and leuko-, the form used before a consonant, come from the Greek…
- In situ, carcinoma Cancer that involves only the place in which it began and has not spread. Carcinoma in situ is an early-stage…
- Cutaneous syndactyly A condition in which fingers or toes are joined together, and the joining involves only the skin, not the…
- Microdosimetry A technique for measuring the microscopic distribution of energy, useful with different types of radiation…
- Agyrophobia Abnormal and persistent fear of crossing streets, highways and other thoroughfares; fear of thoroughfares…
- Genetic code The instructions in a gene that tell the cell how to make a specific protein. A, T, G, and C are the…
- Peptic ulcer Peptic ulcer: A hole in the lining of the stomach, duodenum, or esophagus. A peptic ulcer of the stomach is…
- Immunization, polio One of the two polio vaccines that are available: oral polio vaccine (OPV) and inactivated polio vaccine…
- Diarrhea, antibiotic-induced Diarrhea, antibiotic-induced: A bacterium called Clostridium difficile (C.difficile), one of the most common…
- Split-hand/split-foot malformation A genetic malformation syndrome of the limbs with syndactyly, median clefts of the hands and feet, and…
- Visual receptor The layer of rods and cones that are the visual cells of the retina