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).
Meiotic nondisjunction
Failure of two members of a chromosome pair to separate (disjoin) during meiosis so that both go to one daughter cell and none to the other. This mechanism is responsible for the extra chromosome 21 in trisomy 21 (Down syndrome) and for…
Read the definitionRandom terms
Show more- Gliosis A process leading to scars in the central nervous system that involves the production of a dense fibrous…
- Flatulent Pertaining to flatulence, the generation of excess gas in the intestinal tract. From the Latin flastus…
- Osmolar In biochemistry, referring to the osmolarity, the concentration of osmotically active particles in solution…
- Genome, Vibrio cholerae The genome of the bacterium that causes cholera. This genome contains over 4 million bases in its DNA…
- Food insecure When people must live with hunger and fear starvation
- EMG, surface Surface EMG
- Skeleton The skeleton is composed of bones and is the framework of the body
- Menopause transition Menopause transition: A woman can usually tell if she is approaching menopause because her menstrual periods…
- Technology, recombinant DNA A series of procedures used to join together (recombine) DNA segments. A recombinant DNA molecule is…
- MG (myasthenia gravis) Myasthenia gravis (MG): An autoimmune neuromuscular disorder characterized by fatigue and exhaustion of…
- Pelizaeus-Merzbacher-like disease A disease that is virtually identical to Pelizaeus-Merzbacher disease (PMD) but without a mutation in the…
- Pancreas, annular An abnormal ring of pancreatic tissue that encircles the duodenum and often causes intestinal obstruction…