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).
Fissure
A cleft or groove. A fissure can be normal or abnormal. A fissure in the cerebral cortex is a normal feature. It is a deep fold that involves the entire thickness of the brain wall. A fissure in the anus is distinctly abnormal. It is a…
Read the definitionRandom terms
Show more- SA node The SA node (SA stands for sinoatrial) is one of the major elements in the cardiac conduction system, the…
- Hip replacement, total Hip replacement, total: Surgery in which the diseased ball and socket of the hip joint are completely removed…
- CEA assay Carcinoembryonic antigen (CEA) is a protein found in many types of cells but associated with tumors and the…
- Dyshidrotic eczema Irritation of the skin on the palms of hands and soles of the feet characterized by clear, deep blisters that…
- Blister, fever Fever: A small sore situated on the face or in the mouth that causes pain, burning, or itching before…
- ASCUS An acronym for Atypical Squamous Cells of Undetermined Significance. This term is used in the Bethesda System…
- Scan, spiral CAT A conventional computerized axial tomography scan (CAT scan or CT scan) is an x-ray procedure which combines…
- Chickenpox immunization Immunization designed to prevent or lessen the severity of the common disease known as chickenpox. The…
- Sclerotherapy The injection of a chemical irritant into a vein to sclerose ('harden') it. The chemical irritates the lining…
- Tritium Hydrogen-3, an isotope of hydrogen. Tritium is a long-lived weak emitter of radiation and can be easily…
- Guthrie test A simple screening blood test for phenylketonuria (PKU). The Guthrie test was the original impetus to newborn…
- Cancer, oral Cancer of the mouth area. A sore in the mouth that does not heal can be a warning sign of oral cancer. A…