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).
Miosis
Contraction of the pupil. The opposite of mydriasis.
Read the definitionRandom terms
Show more- Stachybotrys An antigenic green-black mold that grows on wood, paper and cotton products provided there is constant…
- Ear The hearing organ. There are three sections of the ear, according to the anatomy textbooks. They are the…
- Congenital Present at birth. A condition that is congenital is one that is present at birth. There are numerous uses of…
- Alkaloid A member of a large group of chemicals that are made by plants and have nitrogen in them. Many alkaloids…
- Microphthalmia An abnormally small eye, a congenital malformation (birth defect) of the globe. The related term…
- QHC Qualified health claim
- Mitral valve A valve in the heart situated between the left atrium and the left ventricle that permits blood to flow from…
- Stasis dermatitis A skin irritation on the lower legs generally related to circulatory problems. Stasis refers to a stoppage or…
- Blot, Western A technique in molecular biology, used to separate and identify proteins. Called a Western blot merely…
- Nerve, oculomotor The oculomotor nerve is the third cranial nerve. (The cranial nerves emerge from or enter the cranium, the…
- Centenarian Someone who is 100 or more years old. Someone 110 years old and over (no upper limit) may also be referred to…
- PCR (polymerase chain reaction) PCR (polymerase chain reaction): A key technique in molecular genetics that permits the analysis of any short…