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).
Hormone, secretin
Hormone made by glands in the small intestine that stimulates pancreatic secretion. The word 'hormone' was coined by the English physiologists Wm. M. Bayliss and Ernest H. Starling in connection with their discovery of secretin, the first…
Read the definitionRandom terms
Show more- Cancer of the appendix See: Appendix cancer
- Macular cyst A hole in the macula, the tiny oval area made up of millions of nerve cells located at the center of the…
- Sinus headache A headache caused by pressure within the sinus cavities of the head, usually in connection with infection of…
- Urination, painful See: Dysuria
- Vasodilation Widening of blood vessels resulting from relaxation of the muscular wall of the vessels. What widens is…
- A (adenine) In genetics, A stands for adenine, one member of the A-T (adenine-thymine) base pair in DNA. The other base…
- Familial juvenile nephronophthisis (FJN) A childhood genetic kidney disease in which there is progressive symmetrical destruction of the kidneys…
- Dilate To stretch or enlarge. It comes from the Latin verb 'dilatare' meaning 'to enlarge or expand.
- Spinal cord disease in diabetes Involvement of the spinal cord in people with diabetes. Most of the neurologic attention in diabetes mellitus…
- Menstrually associated migraine See: Menstrual migraine
- Morning-after pill A form of contraception used after rather than before sexual intercourse. Morning-after pills interfere with…
- Prognathism An overly prominent jaw.