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).
Alkaptonuria
Alkaptonuria: A genetic metabolic disorder due to deficiency of the enzyme homogentisic acid (HGA) dioxygenase. Deficiency of this enzyme leads to the three cardinal features of alkaptonuria --the presence of homogentisic acid in the…
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Show more- Fetal dystocia Difficult labor and delivery caused by the size (too big), shape or position of the fetus. Dystocia comes…
- Recommended Dietary Allowance The RDA, the estimated amount of a nutrient (or calories) per day considered necessary for the maintenance of…
- Diphtheria Diphtheria: An acute infectious disease that typically strikes the upper respiratory tract including the…
- X-ray, PA An X-ray picture in which the beams pass from back-to-front (posteroanterior). By contrast an AP…
- Anterior pituitary The front portion of the pituitary, a small gland in the head called the master gland. Hormones secreted by…
- Encephalopathy, mitochondrial (MELAS) MELAS is the acronym for Mitochondrial Encephalopathy, Lactic Acidosis, and Strokelike episodes. MELAS is a…
- Uranium A metallic element that is used as nuclear fuel and is highly toxic and radioactive. Exposure to radiation…
- Tarantism A disease once thought to result from the bite of the tarantula spider. This extraordinary affliction was…
- Hand, foot, and mouth disease A common illness of infants and children under 10 years old characterized by fever, sores in the mouth, and a…
- Parainfectious Occurring at the time of and in association with an acute infection or an episode of infection. For example…
- Calipers A metal or plastic tool similar to a compass used to measure the diameter of an object. The skin fold…
- Category two hurricane A hurricane with winds 96-110 mph (83-95 kt or 154-177 km/hr). Storm surge generally 6-8 feet above normal…