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).
Pulmonary valve
One of the four valves in the heart, the pulmonary valve stands at the opening from the right ventricle in the pulmonary artery trunk. It lets blood head in the right direction (toward the lungs) and keeps it from sloshing back from the…
Read the definitionRandom terms
Show more- Grief, unresolved See: Complicated grief
- Neonatal jaundice Jaundice: Yellowish staining of the skin and whites of the newborn's eyes (sclerae) by pigment of bile…
- Artery spasm, coronary See: Coronary artery spasm
- Steroid, designer See: Designer steroid
- Human pluripotent stem cell Stem cell: One of the 'cells that are self-replicating, are derived from human embryos or human fetal tissue…
- Necrobiosis lipoidica diabeticorum A dull red raised area on the skin that evolves into a shiny scar with a violet border, most often on the…
- Unresectable Unable to be removed (resected) by surgery. To resect is to remove. At the time of diagnosis of esophageal…
- Translocation 11 childhood leukemia A new type of childhood leukemia in which a piece of chromosome 11 has been translocated (broken off and…
- Osteogenesis imperfecta congenita See: Osteogenesis imperfecta type II.
- Twenty-twenty Perfectly normal vision. From the ability to score 20/20 on the test of visual acuity with the eye chart…
- THG Tetrahydrogestrinone. A 'designer steroid.' THG first surfaced in October 2003 with reports of its illicit…
- Xylitol Xylitol: A sweetener found in plants that is used as a substitute for sugar. Xylitol is considered a…