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).
Defensin
A family of potent antibiotics made within the body by neutrophils (a type of white blood cell) and macrophages (cells that can engulf foreign particles). The defensins play important roles against invading microbes. They act against…
Read the definitionRandom terms
Show more- Car booster seat A car seat for a child who has outgrown both an infant seat and a toddler seat. The US National Highway…
- Spot, blind In ophthalmology, a blind spot is: > >A small area of the retina where the optic nerve enters the eye; this…
- Dorian Gray effect Sudden aging, an abrupt change from seeming youthfulness to the reality and ravages of age, as can occur…
- Rigor A word with two different but related meanings in medicine:1. A chill, usually with shivering, as at the…
- Shoulder blade The familiar flat triangular bone at the back of the shoulder. Known familiarly as the wingbone or…
- Autoimmune polyendocrinopathy syndrome A genetic autoimmune disease with an extraordinary array of clinical features but characterized most often by…
- Orgasmic dysfunction See: Anorgasmia
- Nerve, second cranial Also known as the optic nerve. This nerve connects the eye to the brain and carries the impulses formed by…
- Balanitis Inflammation of the rounded head (the glans) of the penis. Inflammation of the foreskin is called posthitis…
- Syndrome, dumping A group of symptoms that occur when food or liquid enters the small intestine too rapidly. These symptoms…
- Diabetes Diabetes: Refers to diabetes mellitus or, less often, to diabetes insipidus. Diabetes mellitus and diabetes…
- Comorbidity The coexistence of two or more disease processes.