MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
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).
Marker, tumor
Tumor markers are substances that can be detected in higher-than-normal amounts in the blood, urine, or body tissues of some patients with certain types of cancer. A tumor marker may be made by a tumor itself or by the body in response to…
Read the definitionRandom terms
Show more- Gene testing Testing a sample of blood (or another fluid or tissue) for evidence of a gene. The evidence can be…
- MCAD deficiency Deficiency of an enzyme that makes it impossible to digest certain kinds of fat. MCAD stands for medium-chain…
- Endothelial Relating to the endothelium, the layer of flat cells lining the closed spaces of the body such as the inside…
- Testicular cancer Testicular cancer: Cancer of the male sex organ, the testicle, that normally produces the hormone…
- Nonlymphocytic leukemia, acute Leukemia, acute: Abbreviated ANLL. More commonly called acute myeloid leukemia (AML). A quickly progressive…
- AST 1. Aspartate aminotransferase, an enzyme normally present in liver and heart cells. AST is released into…
- Shock, secondary Shock that occurs as a side effect of another problem, such as a crushing injury or heart attack.
- Pneumonia, Hecht's Pneumonia, Hecht's: Also known as giant cell pneumonia, this is a deadly but fortunately rare complication of…
- Onycholysis Loosening of the nail from the nail bed, usually starting at the border of the nail. The nail tends to turn…
- Power-of-attorney for health-care decision-making See: Proxy. health care.
- Landau-Kleffner syndrome Landau-Kleffner syndrome: A disorder with seizures starting in childhood in which the patient loses skills…
- Perimenopause The menopause transition. Perimenopause begins about 6 years before the natural menopause. This is a time…