MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Ophthalmic veins
The orbital cavity is drained by paired veins called the superior and inferior ophthalmic veins. The superior ophthalmic vein arises at the inner angle of the orbit and follows the course of the ophthalmic artery into the cavernous sinus…
Read the definitionRandom terms
Show more- Pigeon breast Prominence of the breast bone (sternum). Medically, pigeon breast is called pectus carinatum.
- Xerostomia Dry mouth. The condition of not having enough saliva to keep the mouth wet due to inadequate function of the…
- Blood cleaner A process designed to eliminate most pathogens -- viruses, bacteria and fungi -- from donated blood. The…
- Cushingoid Having the constellation of symptoms and signs caused by an excess of cortisol hormone: that is, Cushing…
- Cranial nerve IV The fourth cranial nerve, the trochlear nerve, is the nerve supply to the superior oblique muscle of the eye…
- Valine An amino acid, one of the 20 building blocks of protein. A dietary essential amino acid, valine is required…
- Psoriasis Psoriasis: A reddish, scaly rash often located over the surfaces of the elbows, knees, scalp, and around or…
- Foot-drop Dropping of the front of the foot due to weakness or paralysis of the anterior muscles of the lower leg…
- Ring, intrastromal corneal A plastic ring designed to be implanted in the cornea, the transparent structure in the front of the eye. The…
- Klippel-Feil syndrome See: Klippel-Feil sequence
- Brittle bone disease Osteogenesis imperfecta, not one but a group of genetic diseases, all of which affect collagen, a key…
- Binocular diplopia See: Diplopia, binocular