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).
Infantile spasms
A seizure disorder of infancy and early childhood with the onset predominantly in the first year of life of myoclonic seizures, hypsarrhythmia (abnormal, chaotic electroencephalogram), and mental retardation. The spasms are sudden, brief…
Read the definitionRandom terms
Show more- Spindle cell A cell that is tapered at both ends
- Power outage drinking water safety >Boil the water vigorously (water should be bubbling and rolling) for one to 3 minutes. >If you can't boil…
- Syndrome, Sjogren See: Sjogren syndrome
- Axial tomography, computerized Pictures of structures within the body created by a computer that takes the data from multiple X-ray images…
- Gland, sudoriferous The sudoriferous (sweat) glands are small tubular structures situated within and under the skin (in the…
- Tapazol Trade name for methimazole, an antithyroid medication.
- Syndactyly, complete A condition in which fingers or toes are completely joined together, with the connection extending from the…
- Aortic stenosis Aortic stenosis: Narrowing (stenosis) of the heart valve between the left ventricle of the heart and the…
- Encephalitis, eastern equine See: Eastern equine encephalitis
- Encephalitis, West Nile A febrile disease caused by the West Nile virus that is transmitted from birds to the common Culex mosquito…
- Exonuclease An enzyme that cleaves nucleotide bases sequentially from the free ends of a nucleic acid (DNA or RNA)
- Melanoma, nodular One of the four clinical types of malignant melanoma, typically presents as a raised, distinct, bluish-black…