MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Brain stem
The stemlike part of the brain that is connected to the spinal cord. Or conversely, the extension of the spinal cord up into the brain. The brain stem is small but important. It manages messages going between the brain and the rest of the…
Read the definitionRandom terms
Show more- Ventriculopleural shunt A shunt that drains fluid from a cerebral ventricle into the pleural (chest) cavity. The shunt is designed to…
- Deficiency, alpha-1 antitrypsin See: Alpha-1 antitrypsin deficiency
- Dilation, pupil This examination enables your eye care professional to see more of your retina, the light-sensitive layer of…
- BAC Abbreviation for bacterial artificial chromosome. An artificially created chromosome in which medium-sized…
- Tapeworm, beef See Taenia saginata.
- Unique identifier reporting In public health, a system that uses information such as the person's birth date and part of their…
- New variant Creutzfeldt-Jakob disease Abbreviated nvCJD. A human disease thought due to the same infectious agent as bovine spongiform…
- Fetal rubella effects The constellation of abnormalities, also called the rubella syndrome, caused by infection with the rubella…
- Lobular carcinoma of the breast, infiltrating Breast, infiltrating: Infiltrating lobular carcinoma is the second most common type of invasive breast cancer…
- Cod liver oil An oil extracted from the liver of the cod. Cod liver oil was once given religiously to children every day as…
- Medulla The innermost part. The adrenal medulla is the innermost part of that gland. The renal medulla is the inner…
- QRS complex The deflections in the tracing of the electrocardiogram (ECG or EKG), comprising the Q, R, and S waves, that…