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).
Natural killer cell
A cell that can react against and destroy another cell without prior sensitization to it. Natural killer (NK) cells are part of our first line of defense against cancer cells and virus-infected cells. NK cells are small lymphocytes that…
Read the definitionRandom terms
Show more- Mus musculus The laboratory mouse
- Postprandial After mealtime. A postprandial rise in the blood glucose level is one that occurs after eating. Most medical…
- Cranial nerve, first The cranial nerves emerge from or enter the skull (the cranium), as opposed to the spinal nerves which emerge…
- Guillotine A machine used during (and after) the French Revolution for beheading people condemned to death, by means of…
- Reduction mammaplasty See: Breast reduction
- Center for Biologics Evaluation & Research Abbreviated CBER. Part of the FDA (the US Food & Drug Administration)
- Microdosimetry A technique for measuring the microscopic distribution of energy, useful with different types of radiation…
- Genome annotation The process of identifying the locations of genes and all of the coding regions in a genome and determining…
- Fever, Q Quintan means recurring every 5 days, the characteristic duration of trench fever. Quintan or trench fever is…
- Allergy, cow milk Allergy, cow milk: Casein and whey are the two major proteins of human milk and most milk-based formulas…
- Nitrogen narcosis A condition similar to intoxication with alcohol with euphoria, loss of balance and manual dexterity…
- Y map The array of genes on the Y chromosome. Once thought to be a genetic wasteland, the Y now is known to contain…