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).
Sphingomyelinase deficiency
Also called Niemann-Pick disease, this is a disorder of the metabolism of a lipid (fat) called sphingomyelin that usually causes the progressive development of enlargement of the liver and spleen (hepatosplenomegaly), 'swollen glands'…
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Show more- Immunotherapy Treatment to stimulate or restore the ability of the immune (defense) system to fight infection and disease…
- Hepatomegaly An enlarged liver. 'Hepato-' comes from the Greek 'hepatikos' (of the liver) + 'megaly' from the Greek…
- McBurney's point McBurney's point is the most tender area of the abdomen of patients in the early stage of appendicitis…
- Occipital hematoma A hematoma (collection of blood) in the occipital region (at the back of the head). An occipital hematoma may…
- Lateral femoral cutaneous mononeuropathy See: Meralgia paresthetica
- Vincent angina This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead…
- Cells, reproductive The eggs and sperm are the reproductive cells. Each mature reproductive cell is haploid in that it has a…
- NLD Necrobiosis lipoidica diabeticorum
- Radiation fibrosis Scarring of the lungs from radiation. Radiation fibrosis is a sequel of radiation pneumonitis (inflammation…
- Cancer, male breast See: Breast cancer, male
- Ear, outer There are three sections of the ear. They are the outer ear, the middle ear, and the inner ear. The outer ear…
- Vitreous A clear, jelly-like substance that fills the middle of the eye. Also called the vitreous humor, 'humor' in…