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).
Test, visual acuity
This test measures how well you see at various distances. It is the familiar eye chart test. The eye chart itself -- the usual one is called Snellen's chart -- is imprinted with block letters that line-by-line decrease in size…
Read the definitionRandom terms
Show more- Concordant couple Pair of long-term sexual partners in which both partners have a sexually transmitted infection. The CDC has…
- Biopsy, bone marrow See: Bone marrow biopsy
- Dermatitis, atopic A skin disease characterized by areas of severe itching, redness, scaling, and loss of the surface of the…
- Necrotizing gingivitis This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead…
- Travel-related disease A disease to which travelers are susceptible specifically because of their travel. Travel-related diseases…
- Sclerosis, multiple The injection of a chemical irritant into a vein to sclerose ("harden") it. The chemical irritates the lining…
- IRB Institutional Review Board
- Interventional radiologist A radiologist who uses image guidance methods to gain access to vessels and organs. Interventional…
- White coat hypertension A transient increase in blood pressure (hypertension) triggered by the sight of medical personnel in white…
- Radioactive iodine An isotope of the chemical element iodine that is radioactive. Radioactive iodine is used in diagnostic tests…
- Syndrome, Gelineau A neurological disorder marked by a sudden recurrent uncontrollable compulsion to sleep. Named for a French…
- Hemiparesis Weakness on one side of the body.