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).
Variation, observer
Failure by the observer to measure accurately, resulting in error. Observer variation may be due to the observer's missing a measurement, making an incorrect measurement, or misinterpreting data. Inter-observer variation is the amount of…
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Show more- Nonoxynol Nonoxynol-9 is the most commonly encountered spermatocide in the United States. As with other spermatocides…
- Gastroenterologic disease Any disease of the digestive system. Gastroenterologic disorders include Barrett's esophagus, bile duct…
- Muscle, central core disease of One of the muscles that relax the zonules to enable the lens to change shape for focusing. The zonules are…
- Hyper- A genetic disorder characterized by recurring attacks of chills and fever that usually start before the first…
- Cancer of the rectum See: Rectal cancer
- Complete hysterectomy Hysterectomy: Complete surgical removal of the uterus and cervix. Also called a total hysterectomy.
- Y. pestis Yersinia pestis, the bacteria that causes the bubonic plague which in the year 541 (as the Black Death) and…
- Plethoric Florid, red-faced.
- Vaccination, DT DT (diphtheria and tetanus) vaccine does not protect from pertussis and is usually reserved for individuals…
- TSD Abbreviation for Tay-Sachs disease, a genetic metabolic disorder. See: Tay-Sachs disease
- Vascular headache A group of headaches felt to involve abnormal sensitivity of the blood vessels (arteries) in the brain to…
- Phenylketonuria Phenylketonuria: The inherited inability to metabolize (process) the essential amino acid phenylalanine due…