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).
Rossi counter
An instrument used to measure the energy deposited by radiation in microscopic sites such as cells. Named for its creator Harald H. Rossi (1917-2000), a radiobiophysicist who contributed much to our ability to measure minute amounts of…
Read the definitionRandom terms
Show more- Hypothalamus The area of the brain that controls body temperature, hunger, and thirst
- Large saphenous vein The larger of the two saphenous veins, the principal veins that run up the leg superficially (near the…
- Vital Necessary to maintain life. Breathing is a vital function
- G protein These molecules have been described as 'biological traffic lights.' Located inside the cell, G proteins are…
- Dressler syndrome Pericarditis (inflammation of the pericardium, the sac-like covering of the heart) after a heart attack…
- Rohypnol The trade name for flunitrazepam, which has been abused as a 'date rape' drug. Rohypnol produces…
- Vaginal discharge Vaginal discharge is a fluid produced by glands in the vaginal wall and cervix that drains from the opening…
- Muscular dystrophy One of a group of genetic diseases characterized by progressive weakness and degeneration of the skeletal or…
- EEG Electroencephalogram, e technique for studying the electrical current within the brain. Electrodes are…
- Hallervorden-Spatz disease A genetic disorder in which there is progressive neurologic degeneration with the accumulation of iron in the…
- Supernumerary nipple An extra nipple. Supernumerary nipples are usually smaller than normal and vestigial (nonfunctional, without…
- P. cepacia Pseudomonas cepacia, a bacterium now known as Burkholderia cepacia. See: Burkholderia cepacia