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).
Macewen sign
A sign to detect hydrocephalus and brain abscess. Percussion (tapping) on the skull at a particular spot (near the junction of the frontal, temporal and parietal bones) yields an unusually resonant sound in the presence of hydrocephalus or…
Read the definitionRandom terms
Show more- Chemical reaction A process in which one substance is transformed into another. Thousands of different types of chemical…
- Hecht syndrome A striking genetic disorder in which abnormally short muscles in the jaw make it impossible to open the mouth…
- Arbitration agreement The patient waives the right to sue the doctor and, instead, submit any dispute to arbitration. Arbitration…
- Osteopetrosis Thickening of the bones which become abnormally dense due an inherited defect in bone resorption -- the…
- HPV See: Human papillomavirus
- Ergophobia An abnormal and persistent fear of work. Sufferers of ergophobia experience undue anxiety about the workplace…
- Grand multipara The term 'multipara' applies to any woman who has given birth 2 or more times. A woman who has given birth 5…
- Alcohol An organic chemical in which one or more hydroxyl (OH) groups are attached to carbon (C) atoms in place of…
- Ed Lewis Estimated date of confinement, the estimated calendar date when the baby will be born.
- Atonic Without normal muscle tone or strength. An atonic seizure is one in which the person suddenly loses muscle…
- Vitamin B12-responsive methylmalonicaciduria An inherited metabolic (biochemical) disease that, unless effectively treated, causes young children to…
- Electrocochleography A test that measures the electrical potentials generated in the inner ear in response to stimulation by…