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).
Agonist
A drug that binds to a receptor of a cell and triggers a response by the cell. An agonist often mimics the action of a naturally occurring substance. An agonist produces an action. It is the opposite of an antagonist which acts against and…
Read the definitionRandom terms
Show more- Prior approval See: Prior authorization
- Taste bud One of the tiny, barrel-shaped endings of the gustatory nerve located around the base of the papillae (small…
- Xanthoma tendinosum Xanthoma that clusters around tendons, and is associated with lipid disorders
- Lunule 1. The crescent-shaped area at the base of a fingernail or toenail. 2. Any small crescent- or moon-shaped…
- AV (atrioventricular) AV is the standard medical abbreviation for atrioventricular, a combination that means pertaining to the…
- Leucine An amino acid, one of the 20 building blocks of protein. A dietary essential amino acid, leucine is needed…
- Neuron, sensory See: Sensory neuron
- Menetrier's disease See: Giant hypertrophic gastritis
- Azoospermia No sperm at all. The ejaculate is completely devoid of sperm. By contrast, in oligospermia (literally, few…
- Heart disease Heart disease: Any disorder that affects the heart. Sometimes the term 'heart disease' is used narrowly and…
- Bariatric surgery Surgery on the stomach and/or intestines to help a person with extreme obesity lose weight. Bariatric surgery…
- Nervous system, central (CNS) That part of the nervous system that consists of the brain and spinal cord. The central nervous system (CNS)…