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).
DES
Diethylstilbestrol, the earliest synthetic (man-made) form of a hormone in the estrogen class. DES was once widely prescribed to prevent miscarriages and premature births. Its usage was standard practice in the 1950s and 1960s. Millions of…
Read the definitionRandom terms
Show more- Phenylalanine An essential amino acid. (The human body cannot make it so it is essential to the diet.) Phenylalanine that…
- Paraskevidekatriaphobia Fear of Friday the 13th. The word 'paraskevidekatriaphobia' was devised by Dr. Donald Dossey who told his…
- Septum, ventricular The wall between the two lower chambers (the right and left ventricles) of the heart
- Retrograde amnesia Amnesia in which the lack of memory relates to events that occurred before a traumatic event. Retrograde…
- Rickets A disease of infants and children that disturbs normal bone formation (ossification). Rickets is a failure to…
- Urticaria Another name for the hives. Raised, itchy areas of skin that are usually a sign of an allergic reaction…
- Osteocyte A bone cell
- Cell, T-helper See: T-helper cell
- Histiocytosis X Now called Langerhans cell histiocytosis. This disease is subclassified into eosinophilic granuloma, Letterer…
- Papilloma A small solid benign tumor with a clear-cut border that projects above the surrounding tissue
- Water fluoridation The addition of fluoride to water supplies that are low in fluoride in order to prevent dental caries. For…
- Honey bee genome The genetic complement of the honey bee (Apis mellifera). Its genome is relatively small -- about one-tenth…