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).
GALT deficiency
Lack of the enzyme called GALT (galactose-1-phosphate uridyl transferase) which causes the genetic metabolic disease galactosemia, one of the diseases in many newborn screening panels. The disease can be fatal, if undetected. If detected…
Read the definitionRandom terms
Show more- Abdomen, acute The abrupt (acute) onset of abdominal pain. A potential medical emergency, an acute abdomen may reflect a…
- Popliteal fossa The hollow behind the knee
- Frostbite Frostbite: Damage to tissues from freezing due to the formation of ice crystals within cells, rupturing the…
- Infant A child up to 2 years (24 months) of age. The word 'infant' came from the Latin infans which was derived from…
- Lip, cleft The presence of one or two vertical fissures (clefts) in the upper lip -- cleft lip can be on one side only…
- Erythema A redness of the skin resulting from inflammation, for example, as caused by sunburn
- Truncation The act of truncating, cutting short. See: Truncate
- Programmed cell death A term often used interchangeably with apoptosis. See: Apoptosis
- Unit, international (IU) An international unit (IU) is an internationally accepted amount of a substance. This type of measure is used…
- Teratophobia Fear of bearing a malformed child. A phobia is an unreasonable sort of fear that can cause avoidance and…
- Black Death The Medieval black plague that ravaged Europe and killed a third of its population. It was due to the plague…
- Influenza, avian Influenza, avian: Also called fowl plague, avian flu, and bird flu. A highly contagious viral disease with up…