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).
Retrograde intrarenal surgery (RIRS)
Retrograde intrarenal surgery (RIRS) is a procedure for doing surgery within the kidney using a viewing tube called a fiberoptic endoscope. In RIRS the scope is placed through the urethra (the urinary opening) into the bladder and then…
Read the definitionRandom terms
Show more- Hypnic headache A relatively rare form of headache disorder in which the patient is awakened from sleep nightly, usually…
- Alexander technique A process that teaches how to properly coordinate body and mind to release harmful tension and to improve…
- Human chromosome count The usual number of chromosomes in humans, 46 chromosomes. Also called the human chromosome complement…
- Celiac disease Celiac disease: A disorder resulting from an immune reaction to gluten, a protein found in wheat and related…
- Poliovirus A member of the enterovirus subgroup, family Picornaviridae. Enteroviruses are transient inhabitants of the…
- Leukoencephalopathy with vanishing white matter White matter: An inherited brain disease that occurs mainly in children. and follows a chronic progressive…
- XYY An extra Y chromosome in a male. See: XYY syndrome
- Oral rehydration salts ORS. A solution of glucose-based salt solution used in oral rehydration therapy. WHO and UNICEF recommend a…
- Neoplasia The process of abnormal and uncontrolled growth of cells. The product of neoplasia is a neoplasm (a tumor)
- Adult T-cell lymphoma See: Adult T-cell leukemia
- Activase Brand name of alteplase, a tissue plasminogen activator made by recombinant DNA technology. See: Tissue…
- Remodeling, chromatin See: Chromatin remodeling