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).
National Eye Institute (NEI)
One of the US National Institutes of Health, NEI's mission is to 'conduct and support research, training, health information dissemination, and other programs with respect to blinding eye diseases, visual disorders, mechanisms of visual…
Read the definitionRandom terms
Show more- Aneurysm, arteriosclerotic See: Arteriosclerotic aneurysm
- Exchange, gas The primary function of the lungs involving the transfer of oxygen from inhaled air into the blood and the…
- Piperine A pungent alkaloid that is concentrated in the outer skin of pepper berries (which gives pepper much of its…
- Cerebrohepatorenal syndrome A genetic disorder, which is also called the Zellweger syndrome, characterized by the reduction or absence of…
- Insect sting Stings from large stinging insects such as bees, hornets, yellow jackets and wasps can trigger allergic…
- Syndrome, Prader-Willi See: Prader-Willi syndrome
- Fear of flying An irrational fear of flying is called aerophobia. Aerophobia also refers to irrational fear of fresh air or…
- Claustrophobia An abnormal and persistent fear of closed spaces, of being closed in or being shut in, as in elevators…
- Endotherm An endotherm is a warm-blooded animal (such as homo sapiens). Another term for us warm-blooded creatures is…
- Typhus, classic See: Typhus, epidemic
- Huntingtin The name of the gene responsible for Huntington disease (HD) and of the protein encoded by that gene. The…
- Collapsed lung Failure of full expansion of a once fully expanded lung. Medically called atelectasis. The word comes from…