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).
Gray matter
The cortex of the brain which contains nerve cell bodies. The gray matter is in contrast to the white matter, the part of the brain that contains myelinated nerve fibers. The gray matter is so named because it in fact appears gray. The…
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- Choanal atresia Blockage of the choana, the passageway from the back of one side of the nose to the throat. The choana is…
- Tamponade, esophagogastric A procedure in which a balloon is inflated within the esophagus or stomach to apply pressure on bleeding…
- Brachial artery The artery that runs from the shoulder down to the elbow
- Smoke, environmental tobacco Abbreviated ETS. See: ETS.
- Laryngotomy Surgical opening of the larynx, the voice box
- Startle disease A genetic disorder also known as hyperexplexia in which babies have an exaggerated startle reflex (reaction)…
- Ocular conjunctiva That part of the conjunctiva, a clear membrane of the eye, which covers the outer surface of the eye. The…
- Hypertrophic hypoproteinemic gastropathy See: Giant hypertrophic gastritis
- Acute myocardial infarction A heart attack. The term 'myocardial infarction' focuses on the heart muscle, which is called the…
- Pleural effusion Excess fluid between the two membranes that envelop the lungs. These membranes are called the visceral and…
- Metabolic Relating to metabolism, the whole range of biochemical processes that occur within us (or any living…