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).
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- Focused H and P In common doctor language, H and P stand for the history (H) and physical (P), namely the medical history and…
- TSC1 The tuberous sclerosis 1 gene. The product of the TSC1 gene is a protein called hamartin. This protein…
- Lymphocytic Referring to lymphocytes, a type of white blood cell.
- Intercellular Between cells, as in an intercellular bridge
- Anorexia Anorexia: An eating disorder characterized by markedly reduced appetite or total aversion to food. Anorexia…
- Nitric oxide >It acts as a vasodilator (blood vessel relaxant). >It therefore controls blood flow to tissues. >It…
- Contact eczema, allergic Also called allergic contact dermatitis, this is a red, itchy, weepy reaction where the skin has come into…
- Parasplenic Located near or alongside of the spleen. The spleen is an organ located in the upper left part of the abdomen…
- Hives Hives: A raised, itchy area of skin that is usually a sign of an allergic reaction. It can be rounded or…
- Type 1 diabetes See Diabetes, type 1
- Syndrome, Down A common chromosome disorder due to an extra chromosome number 21 (trisomy 21). Down syndrome causes mental…
- Immunization, varicella A live attenuated (weakened) viral vaccine that is recommended for people traveling to or living in tropical…