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).
Polysomnography
Continuous recording of specific physiologic variables during sleep. Polysomnography typically records brain wave changes (electroencephalogram), eye movements (electrooculogram), muscle tone (electromyogram), respiration…
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Show more- Hematophobia An abnormal and persistent fear of blood is called hematophobia. Sufferers of this very common phobia dread…
- Crime scene investigation The use of physical evidence at the scene of the crime and the use of deductive and inductive reasoning to…
- Gerstmann-Straussler-Scheinker disease See: Gerstmann-Sträussler-Scheinker syndrome
- Protein kinase A An enzyme system that is activated by cyclic adenosine monophosphate (cAMP) and that catalyzes the activity…
- Small calorie (Calorie) A type of lung cancer in which the cells appear small and round under the microscope. Also called oat cell…
- Angiography, fluorescein See: Von Willebrand disease.
- Sinus 1. An air-filled cavity in a dense portion of a skull bone. The sinuses decrease the weight of the skull. The…
- Rodbell, Martin (1925-1998) American biochemist and molecular endocrinologist who shared the Nobel Prize in 1994 in…
- Introitus In anatomy, an introitus is an entrance, one that goes into a canal or hollow organ. The introitus of the…
- MRNA Messenger RNA, the key intermediary in gene expression, translating the DNA's genetic code into the amino…
- Symmetric lipomatosis, multiple A disorder characterized by painless symmetrical diffuse deposits of fat beneath the skin of the neck, upper…
- PCBs PolyChlorinated Biphenyls, a mixture of up to 209 chlorinated chemicals. Although PCBs are no longer produced…