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.
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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).
Knee-jerk
Adjective meaning readily predictable to the point of being automatic. Knee-jerk often has a negative connotation and conveys the idea of an all-too-hasty, impulsive, irrational response based on a preset idea. For example, a dictator's…
Read the definitionRandom terms
Show more- Otoacoustic emission test A physician specialized in diagnosing and treating diseases of the head and neck, especially those involving…
- Acetylcholine A key chemical in neurons (nerve cells) that acts as a neurotransmitter and carries information across the…
- Ichthyosis, spasticity, oligophrenia syndrome Also known as the Sjogren-Larsson syndrome, this is a genetic (inherited) disease characterized by a triad of…
- Common migraine Migraine without aura. The most frequent type, accounting for about 80-85% of migraine. See: Migraine
- Tenesmus Straining, especially long-continued, ineffectual and painful straining, at stool or in urination. Straining…
- Mean cell volume A standard part of the complete blood count, the mean cell volume (MCV) is the average volume of a red blood…
- Myometrium The muscular outer layer of the uterus.
- Seasonal affective disorder (SAD) See: SAD.
- Injury, hangman (Hangman's fracture) Injury to one of the two crescent-shaped cartilage pads between the two joints formed by the femur (the thigh…
- EUS Endoscopic ultrasound
- Cyclic AMP-dependent protein kinase See: Protein kinase A
- Biopsy The removal of a sample of tissue for purposes of diagnosis. (Many definitions of 'biopsy' stipulate that the…