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).
Ion channel
A protein that acts as a pore in a cell membrane and permits the selective passage of ions (such as potassium ions, sodium ions, and calcium ions), by means of which electrical current passes in and out of the cell. Ion channels also serve…
Read the definitionRandom terms
Show more- Tophi The plural of tophus
- System, parasympathetic nervous A part of nervous system that slows the heart rate, increases intestinal and gland activity, and relaxes…
- Esophageal cancer with tylosis See: Tylosis with esophageal cancer
- Recombinant DNA technology A series of procedures used to join together (recombine) DNA segments. A recombinant DNA molecule is…
- Diverticulosis Diverticulosis: Diverticulosis is the condition of having diverticula, small outpouchings from the large…
- Ultraviolet radiation Invisible rays that are part of the energy that comes from the sun. Ultraviolet radiation can burn the skin…
- Cardioplegia Paralysis of the heart, as may be done electively in stopping the heart during cardiac surgery. Cardioplegia…
- Hypoxic-ischemic encephalopathy Damage to cells in the central nervous system (the brain and spinal cord) from inadequate oxygen…
- Defensin A family of potent antibiotics made within the body by neutrophils (a type of white blood cell) and…
- Medical helminthology The field of medicine that pertains to helminths (worms) capable of disease in people. For more about these…
- Leukocyte,eosinophilic See: Eosinophil
- Optic cup The white, cup-like area in the center of the optic disc. The optic disk is the circular area at the back of…