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).
Sclerotherapy
The injection of a chemical irritant into a vein to sclerose ('harden') it. The chemical irritates the lining of the vein, causing it to swell and the blood to clot. The vein turns into scar tissue that fades from view. Blood flow shifts…
Read the definitionRandom terms
Show more- Optic neuroma A slow-growing benign tumor of the optic nerve. Optic gliomas are associated with neurofibromatosis type 1…
- Reticuloendotheliosis, leukemic See: Hairy cell leukemia
- Power outage food safety >For the Freezer section: A freezer that is half full will hold food safely for up to 24 hours. A full…
- Mutation, null A mutation (a change) in a gene that leads to its not being transcribed into RNA and/or translated into a…
- Arm 1. In popular usage, the appendage that extends from the shoulder to the hand. However, the medical…
- Schistosome A parasitic trematode worm contracted from infested water that is capable of causing liver, gastrointestinal…
- Lyonization The inactivation of an X chromosome. One of the two X chromosomes in every cell in a female is randomly…
- Vaccination, Td Td is the vaccine given to children over six and adults as boosters for immunity to diphtheria and tetanus.
- Cystectomy Surgery to remove the bladder. Cystic fibrosis: A common genetic disease inherited as a recessive condition…
- Split-hand/split-foot malformation A genetic malformation syndrome of the limbs with syndactyly, median clefts of the hands and feet, and…
- Bypass, cardiopulmonary Bypass of the heart and lungs as, for example, in open heart surgery. Blood returning to the heart is…
- Molluscum contagiosum A contagious disease of the skin marked by the occurrence of rounded soft tumors of the skin caused by the…