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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
CA 19-9
A tumor marker initially found in colorectal cancer patients, but subsequently also identified in patients with pancreatic, stomach, and bile duct cancer. In those who have pancreatic cancer, higher levels of CA 19-9 tend to be associated…
Read the definitionRandom terms
Show more- Progressive vaccinia A severe complication of smallpox vaccination that occurs because of an immune defect in the vaccinated…
- Suicide gene A gene whose expression in a cell is lethal for that cell. Suicide genes form the basis of a strategy for…
- Behcet's disease See: Behcet's syndrome
- Sub- Prefix meaning meaning under, below, less than normal, secondary, less than fully. As in subacute, subaortic…
- Femoral vein The largest vein in the groin. The femoral vein is a continuation of the popliteal vein. It passes, together…
- Pain, back Pain felt in the low or upper back. There are many causes of back pain. Pain in the low back can relate to…
- Sweat test A simple test that is used to evaluate a patient who is suspected of having cystic fibrosis (CF). The goal of…
- Anatomic orientation terms In anatomy, certain terms are used to denote orientation. For example, a structure may be horizontal, as…
- Adenoid cystic carcinoma A type of cancer that most often develops in the salivary glands of the head and neck. It may arise in other…
- Varicose vein A dilated (widened) tortuous (twisting) vein, usually involving a superficial vein in the leg, often…
- Schizophrenia Schizophrenia: One of several brain diseases whose symptoms that may include loss of personality (flat…
- James Ramsay Hunt See: Ramsay Hunt, James