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).
Megalencephaly
Also called macrencephaly, a condition in which there is an abnormally large, heavy, and usually malfunctioning brain. By definition, the brain weight is greater than average for the age and gender of the child. Head enlargement may be…
Read the definitionRandom terms
Show more- Interferon Interferon: A naturally occurring substance that interferes with the ability of viruses to reproduce…
- Neonatal lupus A lupus-like disease in a baby due to the transfer through the placenta of lupus antibodies from the mother…
- Mycobacteria Plural of mycobacterium
- Portal vein A large vein that carries blood from the stomach and the intestines to the liver. The portal vein is formed…
- Culdocentesis The puncture and aspiration (withdrawal) of fluid from the cul-de-sac, the rectouterine pouch (the pouch of…
- Immunotherapy Treatment to stimulate or restore the ability of the immune (defense) system to fight infection and disease…
- Cutaneous papilloma A small tag of skin that may have a stalk (a peduncle). Cutaneous papillomas may appear on the skin almost…
- Skeletal dysplasia One of a large contingent of genetic diseases in which the bony skeleton is abnormally formed during…
- Cysts Cysts: Cysts are abnormal, closed sac-like structures within a tissue that contain a liquid, gaseous, or…
- Subglottis The lower part of the larynx just below the vocal cords down to the top of the trachea, which takes air to…
- Infant mortality rate The number of children dying under a year of age divided by the number of live births that year. The infant…
- Shoulder joint The flexible ball-and-socket joint formed by the junction of the humerus and the scapula. This joint is…