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).
Fourth cranial nerve
The fourth cranial nerve, the trochlear nerve, is the nerve supply to the superior oblique muscle of the eye, one of the muscles that moves the eye. Paralysis of the trochlear nerve results in rotation of the eyeball upward and outward…
Read the definitionRandom terms
Show more- Eustachian tube The tube that runs from the middle ear to the pharynx. The function of the Eustachian tube is to protect…
- Wesand See: Weasand
- Smallpox bioterrorism The misuse of smallpox as an agent of bioterrorism. Smallpox was eradicated in 1977. Routine vaccinations…
- Family history The family structure and relationships within the family, including information about diseases in family…
- Cortical blindness Blindness due to loss or injury to the visual cortex, that section of the cerebral cortex responsible for…
- PVB Premature ventricular beat. See: Extrasystole
- Trichinella spiralis The worm that causes trichinosis. Trichinella spiralis larvae can infest pigs and wild game, hibernating in…
- Androphobia An abnormal and persistent fear of men. Sufferers experience anxiety even though they may realize they face…
- Rheumatism, psychogenic Rheumatism in which the patient reports inconsistent pains of muscles and joints that do not correspond to…
- Shark attack >Always swim in a group. Sharks most often attack lone individuals. >Don't wander too far from shore. Doing…
- Endogenous Inside. For example, endogenous cholesterol is cholesterol that is made inside the body and is not in the…
- Word blindness A neurological disorder characterized by loss of the ability to read or understand the written word. Word…