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).
Junk DNA
Noncoding regions of DNA that have no apparent function. The term 'junk DNA' is a disparaging one, expressing some of the disappointment felt by geneticists when they first gazed upon sizable segments of the genetic code and, instead of…
Read the definitionRandom terms
Show more- MECP2 (methyl-CpG-binding protein-2) An enzyme which, when mutated, results in RTT (Rett syndrome), a genetic disease that is a uniform and…
- Pouch, Pavlov At different points along the dogs' digestive tracts, the Russian physiologist Ivan Petrovich Pavlov…
- Nephron A key unit, both anatomically and functionally, of the kidney.
- Parathyroid adenoma A small tumor of the parathyroid gland and the most common disorder of the gland. Parathyroid adenomas are…
- Aneuploidy One or a few chromosomes above or below the normal chromosome number. For example, three number 21…
- Gametogenesis The development and production of the male and female germ cells required to form a new individual. The male…
- Regulatory gene A gene that regulates the expression of other genes. A regulatory gene is a nosy gene whose prime…
- Rectum The last 6 to 8 inches of the large intestine. The rectum stores solid waste until it leaves the body through…
- Splenic vein A vein formed by the union of several small veins that return blood from the stomach, pancreas and spleen…
- Spanish influenza See: Spanish flu
- CB1 See: Cannabinoid receptor 1
- Dentin Dentin is the hard tissue of the tooth surrounding the central core of nerves and blood vessels (pulp).