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).
X-ray
1. High-energy radiation with waves shorter than those of visible light. X-rays possess the properties of penetrating most substances (to varying extents), of acting on a photographic film or plate (permitting radiography), and of causing…
Read the definitionRandom terms
Show more- Parietal lobe Part of the brain, specifically the section of the cerebral hemisphere that lies beneath the parietal bone…
- BKA Acronym standing for 'below knee amputation.' A nurse scrubbing for a BKA is preparing to assist in a…
- Carotid-artery stenosis See: Carotid stenosis
- Hardy-Weinberg law Basic concept in population genetics discovered independently in 1908 by the great English mathematician…
- Neo- (prefix) Prefix meaning new. From the Greek 'neos', new, young, fresh, recent. Examples of terms starting with 'neo-'…
- Predispose To make more likely or render susceptible. Smoking predisposes to a number of diseases, including esophageal…
- Arachnodactyly Long spider-like fingers and toes, a frequent finding in Marfan syndrome, a heritable disorder of connective…
- Hepatitis A immunization When immediate protection against hepatitis A (infectious hepatitis) is needed, immunoglobulins are used…
- Tomograph The apparatus for generating a tomogram, a two-dimensional image of a slice or section through a…
- Stone, kidney Kidney stone: A stone in the kidney (or lower down in the urinary tract). Kidney stones are a common cause of…
- Family, gene A group of genes related in structure and often in function. The genes belonging to a gene family are…
- Refraction In ophthalmology, the bending of light that takes place within the human eye. Refractive errors include…