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).
Allergy and Infectious Diseases, National Inst.
One of the U.S. National Institutes of Health (NIH), the mission of the NIAID is 'to support and conduct research and research training (that) strives to understand, treat, and ultimately prevent the myriad infectious, immunologic, and…
Read the definitionRandom terms
Show more- MDS Myelodysplastic syndrome, or myelodysplastic syndromes
- Primary biliary cirrhosis (PBC) A liver disease caused by an abnormality of the immune system. Small bile ducts within the liver become…
- Twenty-twenty Perfectly normal vision. From the ability to score 20/20 on the test of visual acuity with the eye chart…
- Incompetent cervix A cervix that is abnormally liable to dilate and so is not competent to keep the fetus up in the uterus and…
- Licensed clinical social worker A social worker trained in psychotherapy who helps individuals deal with a variety of mental health and daily…
- Bioterrorism Bioterrorism: Terrorism using biologic agents. Biological diseases and the agents that might be used for…
- Erythropoietin test Erythropoietin test: A test of the hormone erythropoietin (EPO) in blood. An abnormal level of EPO may mean…
- D (drug caution code) Abbreviation on a medication that indicates caution because the medication may cause drowsiness. While not a…
- Left atrium The upper right chamber of the heart. The left atrium receives oxygenated blood from the lungs and pumps it…
- Physiologic jaundice of the newborn Although there can be a diversity of physiologic stress tests, this refers here to a physiologic cardiac…
- Smad3 A protein in a pathway that helps prevent tumors. Smad3 is a player in a cellular network relay system called…
- Microcystic corneal dystrophy A disorder in which the cornea (the normally clear front window of the eye) shows dots (or microcysts)…