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).
Blastocyst
A thin-walled hollow structure in early embryonic development that contains a cluster of cells called the inner cell mass from which the embryo arises. The outer layer of cells gives rise to the placenta and other supporting tissues needed…
Read the definitionRandom terms
Show more- Paleolithic diet The Paleolithic diet is a weight loss plan based upon the premise of consuming only those foods available…
- Spasticity A state of increased tone of a muscle (and an increase in the deep tendon reflexes). For example, with…
- Hormone, erythropoietin Erythropoietin is a substance produced by the kidney that leads to the formation of red blood cells in the…
- Exercise cardiac stress testing The most widely used cardiac (heart) screening test. The patient exercises on a treadmill according to a…
- Autoimmune hemolytic anemia A condition in which the immune system attacks the red blood cells, resulting in fewer of these…
- Analogous In anatomy, similar in appearance or function but otherwise different. Two structures may be analogous if…
- Macroangiopathy Angiopathy means disease of the blood vessels (arteries, veins, and capillaries). There are two types of…
- Reactant, acute-phase See: Acute-phase protein
- Sphenoid bone A prominent, irregular, wedge-shaped bone at the base of the skull. The sphenoid bone has been called the…
- Loiasis The disease caused by the eye worm known as loa loa, a parasite that lives in humans and other primates…
- Periosteum The periosteum is a dense membrane composed of fibrous connective tissue that closely wraps (invests) all…
- Cancer, rectal See: Rectal cancer