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).
System, immune
A complex system that is responsible for distinguishing us from everything foreign to us, and for protecting us against infections and foreign substances. The immune system works to seek and kill invaders. If a person is born with a…
Read the definitionRandom terms
Show more- Proteins, acute-phase See: Acute-phase protein
- Unresectable Unable to be removed (resected) by surgery. To resect is to remove. At the time of diagnosis of esophageal…
- Hypertrophy, benign prostatic Abnormally elevated blood level of uric acid. Uric acid is a breakdown product of purines that are part of…
- Subacute spongiform encephalopathy See: Gerstmann-Straussler-Scheinker syndrome
- Pickwickian syndrome The combination of obesity, somnolence (sleepiness), hypoventilation (underbreathing), and plethoric (red)…
- HCV PCR viral detection test See: HCV PCR
- Hospital It may seem unnecessary to define a 'hospital' since everyone knows the nature of a hospital. A hospital…
- LMP Abbreviation for 'last menstrual period.' By convention, pregnancies are dated in weeks starting from the…
- Mold A very large group of microscopic fungi that live on plant or animal matter. Most are filamentous organisms…
- Heterozygous Possessing two different forms of a particular gene, one inherited from each parent. A person who is…
- Pregnancy-associated plasma protein A Abbreviated as PAPPA or PAPP-A. A large zinc-binding protein that acts as an enzyme, specifically a…
- Vasopressin A relatively small (peptide) molecule that is released by the pituitary gland at the base of the brain after…