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).
Sacral
Referring to the sacrum, the 5 vertebral bones situated between the lumbar vertebrae and the coccyx (the lowest segment of the vertebral column). The 5 sacral vertebrae are represented by the symbols S1 through S5. There are…
Read the definitionRandom terms
Show more- Jaundice, congenital hemolytic Jaundice, congenital hemolytic: Known also as hereditary spherocytosis (HS), this is a genetic disorder of…
- Central venous catheter See: Catheter, central venous
- BSL-3 Biosafety level 3. A level of biosafety considered appropriate for agents that may be transmitted by the…
- Ovarian cyst A fluid-filled sac in the ovary. The most common type of ovarian cyst is called a follicular cyst. It results…
- Tent, oxygen A tent-like device used to deliver high levels of oxygen to a patient in a bed. The tent typically covers the…
- Pandemic An epidemic (a sudden outbreak) that becomes very widespread and affects a whole region, a continent, or the…
- Xanth- (prefix) A colorful prefix relating to a yellow color. 'Xanth-' is related to the word 'xanthic' which has its roots…
- Vitrectomy Removal of the gel (called the vitreous) from within the eyeball. This may be done because it has blood and…
- Sialidosis A form of mucolipidosis characterized by deficiency of acid alpha-N-acetyl- neuraminidase (sialidase). See…
- Exclamation point hair Exclamation point hair is a key diagnostic finding in a disorder called alopecia areata. Alopecia areata is…
- Hand-foot-and-mouth disease A viral syndrome with a rash on the hands and feet and in the mouth. The internal rash (the enanthem)…
- Apert syndrome A malformation syndrome characterized by a high short skull, underdevelopment of the midface, soft tissue and…