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).
Co-stimulation
An event in the immune system involving the delivery of a second signal by an antigen-presenting cell. The second signal rescues the activated T cell from anergy (which is a state of immune unresponsiveness), allowing the T cell to produce…
Read the definitionRandom terms
Show more- Syndrome, Apert (acrocephalosyndactyly) An inherited disorder with abnormalities of the skull and face and the hands and feet. There is premature…
- Hyper-IgD syndrome A genetic disorder characterized by recurring attacks of chills and fever that usually start before the first…
- Painful urination See: Dysuria
- Sample, random A group selected randomly, solely by chance
- Periodic breathing Clusters of breaths separated by intervals of apnea (no breathing) or near-apnea. As opposed to normal…
- Pharmacist A professional who fills prescriptions, and in the case of a compounding pharmacist, makes them. Pharmacists…
- Antisocial personality See: Antisocial personality disorder
- Affinity In immunology, the strength of binding interaction between antigen and antibody molecules
- Vesicointestinal See: Vesicoenteric
- Age of father See: Paternal age
- Plethoric Florid, red-faced.
- Fragile X tremor/ataxia syndrome Abbreviated FXTAS (pronounced fax-tass). A progressive neurological disorder that strikes men over age 50 and…