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).
Fear of the dark
Pathological fear of the dark, an abnormal and persistent dread of the dark. Sufferers experience undue anxiety even though they may rationally realize that the dark does not pose a threat commensurate with their fear. Fear of the dark is…
Read the definitionRandom terms
Show more- Spots, Brushfield's Speckled iris. Little white spots that slightly elevated on the surface of the iris and are arranged in a…
- Lithobid See: Lithium
- Operation, Blalock-Taussig A pioneering heart operation named after the American surgeon Alfred Blalock (1899-1964) and the pediatric…
- Cardiomyopathy Disease of the heart muscle (the myocardium). From the Greek roots: 'cardio-', heart + 'mys', muscle +…
- Dizziness, pre-syncopal Dizziness before fainting. Some symptoms of dizziness such as wooziness, feeling about to black out, and…
- Fluorescent in situ hybridization An important molecular cytogenetic method for identifying chromosomes and parts of chromosomes, deciphering…
- Familial Parkinson disease type 10 A familial form of Parkinson disease inherited in an autosomal dominant manner due to a gene on chromosome…
- Generic name, drug >The chemical name of a drug. >A term referring to the chemical makeup of a drug rather than to the…
- Cranial dystonia A term used to describe dystonia that affects the muscles of the head, face, and neck. Oromandibular dystonia…
- Cold sore A small sore situated on the face or in the mouth that causes pain, burning, or itching before bursting and…
- Acute-phase proteins See: Acute-phase protein
- Gesundheit Interjection used to wish 'good health,' especially to someone who has sneezed. In this situation, Gesundheit…