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).
Polymorphism
A variation in the DNA that is too common to be due merely to new mutation. A polymorphism must have a frequency of at least 1% in the population. Examples of polymorphisms include the genes for sickle cell disease, thalassemia and G6PD…
Read the definitionRandom terms
Show more- Mitosis Ordinary division of a body cell (a somatic cell) to form two daughter cells, each with the same chromosome…
- OHRP The Office of Human Research Protections, the agency responsible for developing, monitoring and exercising…
- Pain, ankle Pain felt in the low or upper back. There are many causes of back pain. Pain in the low back can relate to…
- Ear, internal There are three sections of the ear. They are the external ear, the middle ear, and the internal ear. The…
- Tick typhus Also known as Rocky Mountain spotted fever, an acute febrile (feverish) disease initially recognized in the…
- ShRNA Short hairpin RNA. A short sequence of RNA which makes a tight hairpin turn and can be used to silence gene…
- Mutation, hereditary Mutation, hereditary: A heritable change in the DNA of a gene or chromosome in a cell destined to become an…
- Lysosome An organelle (a little organ) in a cell containing enzymes that degrade macromolecules (large molecules) and…
- Germanium A nonessential trace element that has caused nephrotoxicity (kidney injury) and death when used chronically…
- Cold, summer A popular term for hay fever. Although the symptoms of a 'summer cold' may be similar to those of a real…
- Second wave A phenomenon of infections that can develop during a pandemic. The disease infects one group of people first…
- M.D. Abbreviation for the Latin title Medicinae Doctor, Doctor of Medicine. Sometimes written today as MD (without…