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).
Niemann-Pick disease
A biochemical disorder affecting a lipid (fat) called sphingomyelin, resulting usually in progressive enlargement of the liver and spleen (hepatosplenomegaly), 'swollen glands' (lymphadenopathy), anemia and mental and physical…
Read the definitionRandom terms
Show more- Smoke, second-hand Environmental tobacco smoke that is inhaled involuntarily or passively by someone who is not smoking…
- Grand rounds A formal meeting at which physicians discuss the clinical case of one or more patients. Grand rounds…
- Randomization A method based on chance alone by which study participants are assigned to a treatment group. Randomization…
- Strep, group A A well-known strain (a type) of streptococcus (strep) bacteria that can cause strep throat and common skin…
- Synchronic study A study done at a single point in time rather than over the course of a period of time (longitudinally)
- Otoplasty Otoplasty: Plastic surgery to reshape the outer ear.
- Alternative medical system A system of alternative medicine built upon a complete system of theory and practice. Often, such systems…
- Ventricle, right The ventricles are the two lower chambers of the heart. The right ventricle is the chamber that receives…
- Oral glucose tolerance test A test to determine the body's ability to handle glucose . In the test, a person fasts overnight (at least 8…
- Biopsy The removal of a sample of tissue for purposes of diagnosis. (Many definitions of 'biopsy' stipulate that the…
- Thyroiditis, autoimmune See: Hashimoto thyroiditis
- Strep test, rapid A diagnostic test commonly used to demonstrate whether streptococcus bacteria ('strep') are present in the…