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).
Nicotine
Nicotine: An alkaloid (a nitrogen-containing chemical) made by the tobacco plant or produced synthetically. In the plant kingdom, nicotine is not restricted to tobacco but is widespread. The tobacco plant, Nicotiana tabacum, belongs to the…
Read the definitionRandom terms
Show more- Duodenal Pertaining to the duodenum, part of the small intestine. As in duodenal ulcer or duodenal biliary drainage
- Afterbirth The placenta + the fetal membranes that are normally expelled from the uterus after the birth of the baby…
- Meningococcal vaccine Meningococcal vaccine: A vaccine to prevent meningococcal infection, including meningococcal meningitis, an…
- Eye color The color of the iris. The genetics of eye color are complicated. Eye color is polygenic. It is determined by…
- Archaeogenetics The study of the past using the techniques of molecular genetics. The application of genetics to archeology…
- Cholestin One of the three major preparations of red yeast rice, a tradition Chinese medicine now used to lower…
- Spasm, coronary artery See: Coronary artery spasm
- Excision 1. Surgical removal, as in the excision of a tumor. 2. The removal as if by surgery, as in base excision…
- Idiopathic thrombocytopenic purpura A 'wastepaper basket' for those cases of immune thrombocytopenic purpura whose cause is still unknown. See…
- Digestive system The organs that are responsible for getting food into and out of the body and for making use of it. These…
- Prostate cancer Prostate cancer: An uncontrolled (malignant) growth of cells in the prostate gland which is located at the…
- Eardrum The tympanic membrane of the ear, or tympanum, the membrane that separates the middle ear from the external…