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).
Cell, stem
An ancestral cell, the most primitive type of cell. Stem cells are relatively unspecialized (undifferentiated) cells that are characteristically of the same family type (lineage). They retain the ability to divide throughout life and give…
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Show more- Hirschsprung disease Hirschsprung disease: A congenital abnormality (birth defect) of the bowel in which there is absence of the…
- McArdle's disease See: McArdle disease
- Aural vertigo, recurrent A condition, also known as Meniere's disease, with recurrent vertigo accompanied by ringing in the ears…
- Lichen planus Lichen planus: A common skin disease with small itchy pink or purple spots on the arms or legs. The lesions…
- Congenital torticollis A deformity of the neck that is evident at birth. It is due to shortening of the neck muscles. Congenital…
- Lochia The fluid that weeps from the vagina for a week or so after delivery of a baby. At first the lochia is…
- Nyctanopia Impaired vision in dim light and in the dark, due to impaired function of the rods in the retina. Night…
- Ketoacidosis A feature of uncontrolled diabetes mellitus characterized by a combination of ketosis and acidosis. Ketosis…
- Autoimmune disease An illness that occurs when the body tissues are attacked by its own immune system. The immune system is a…
- Pregnancy, hyperemesis of Excessive vomiting during pregnancy which, by definition, leads to the loss of 5% or more of the body weight…
- Chemo-fog See: Chemobrain
- Endourologist An endourologist is a urologist with special expertise in navigating, using endoscopic optical instruments…