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).
Pro time
The pro time (or, more properly, the prothrombin time) is a test of the integrity of part of the clotting scheme. The prothrombin time is also commonly used as a method of monitoring the accuracy of blood thinning treatment…
Read the definitionRandom terms
Show more- Multiple sclerosis Multiple sclerosis: Abbreviated MS. A disease of the central nervous system (CNS) marked by numbness…
- Levothyroxine See: Thomas, Lewis.
- Tomograph The apparatus for generating a tomogram, a two-dimensional image of a slice or section through a…
- Laser-assisted in situ keratomileusis A kind of laser eye surgery designed to change the shape of the cornea to eliminate or reduce the need for…
- Spinal stenosis Narrowing of the spaces in the spine, resulting in compression of the nerve roots or spinal cord by bony…
- Child abuse, psychological Child abuse, psychological: Also known as emotional child abuse, this is the third most frequently reported…
- Calculus, renal A stone in the kidney (or lower down in the urinary tract). Also called a kidney stone. The stones themselves…
- Iris, speckled Due to little white (or lightly colored) spots that are slightly elevated on the surface of the iris. These…
- Philadelphia chromosome (Ph) The chromosome abnormality that causes chronic myeloid leukemia (CML). Abbreviated as the Ph chromosome. The…
- Headache, thunderclap A sudden and excruciatingly painful headache. Some doctors feel that in the absence of a known headache…
- Dysfunction >Constitutional hepatic dysfunction, (familial nonhemolytic jaundice), >Dental dysfunction (abnormal…
- Aneurysm A localized widening (dilatation) of an artery, vein, or the heart. At the area of an aneurysm, there is…