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).
Dilatate
To enlarge or expand. For example, to dilatate the eye is to enlarge the pupil temporarily with special (mydriatic) eye drops. This procedure allows the eye care specialist to better view the inside of the eye. The word 'dilate' means the…
Read the definitionRandom terms
Show more- Hypercholesterolemia High blood cholesterol. This can be sporadic (with no family history) or familial. Familial…
- Social phobia Excessive fear of embarrassment in social situations that is extremely intrusive and can have debilitating…
- Depression, dysthymia A type of depression involving long-term, chronic symptoms that are not disabling, but keep a person from…
- Neuralgia, ciliary A distinctive syndrome of headaches, better known today as cluster headache. There are two main clinical…
- CMV (cytomegalovirus) A virus that infects 50-85% of adults in the US by age 40 and is also the virus most frequently transmitted…
- Granulocyte colony-stimulating factor See: G-CSF
- Insomnia, transient Insomnia that usually lasts less than a week and does not recur. If it recurs from time to time, the insomnia…
- Pinel system The policy of treating the mentally ill in hospitals and other institutions humanely and without the use of…
- Cancer, thyroid See: Thyroid cancer
- Plummer-Vinson syndrome Iron deficiency anemia, esophageal webs, and dysphagia (difficulty swallowing). The iron deficiency is…
- Fasciola hepatica A parasite called the liver fluke which causes Fascioliasis or 'liver rot' in ruminants and many other…
- Study population The group of individuals in a study. In a clinical trial, the participants make up the study population. The…