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).
Anus, imperforate
A congenital malformation (a birth defect) in which the rectum is a blind alley (a cul-de-sac) and there is no anus. The anus is imperforate in the sense that the normal perforation we call the anus is absent. The end of the intestinal…
Read the definitionRandom terms
Show more- Thimerosal A mercury-containing preservative used in some vaccines and other products since the 1930's. No harmful…
- Barbara McClintock See: McClintock, Barbara
- Formaldehyde A pungent gas, with the chemical formula HCHO, used as an antiseptic, disinfectant, and especially today as a…
- Journal of Clinical Investigation (JCI) A highly regarded journal of medical science that publishes 'biologically significant findings of…
- Neurotheology The search for the place(s) in the brain where religious beliefs originate. Neurotheology mixes terms and…
- Fear of flying An irrational fear of flying is called aerophobia. Aerophobia also refers to irrational fear of fresh air or…
- Hypotonic solution A solution with a lower salt concentration than in normal cells of the body and the blood. As opposed to an…
- Balance A biological system that enables us to know where our bodies are in the environment and to maintain a desired…
- Uterine contraction The tightening and shortening of the uterine muscles. During labor, contractions accomplish two things: (1)…
- Sand, biliary Biliary sand is a term mostly used by surgeons when they remove the gallbladder to describe uncountable…
- Wart Wart: A local growth of the outer layer of the skin (the epidermis) caused by a virus. The virus of warts (a…
- Artificial pacemaker A device that uses electrical impulses to regulate the heart rhythm or to reproduce that rhythm. An internal…