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).
Poly-
1) Prefix meaning much or many For example, polycystic means characterized by many cysts. 2) Short form for polymorphonuclear leukocyte, a type of white blood cell
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Show more- Frenum A restraining structure. Frenum is Latin for a bridle. A small frenum is a frenulum
- White coat hypertension A transient increase in blood pressure (hypertension) triggered by the sight of medical personnel in white…
- XX gonadal dysgenesis with sensorineural deafness See Perrault syndrome
- Moscati, St. Joseph (1880-1927) Dr. Giuseppe (Joseph) Mosati, physician from Naples. First modern doctor to be canonized by the…
- REM sleep Sleep: REM sleep is the portion of sleep when there are rapid eye movements (REMs). Dreams occur during REM…
- Retinoschisis, X-linked See: Juvenile retinoschisis
- Corneal dystrophy, epithelial basement A disorder in which the cornea (the normally clear front window of the eye) shows grayish fingerprint lines…
- Virus, xenotropic A virus that can grow in the cells of a species foreign to the normal host species, a species different from…
- Endometritis Inflammation of the endometrium. The endometrium is the inner layer of the womb (uterus)
- Meckel's diverticulum An outpouching from the small intestine, due to failure of obliteration of the yolk stalk (which normally…
- Urine blood Blood in the urine. Also called hematuria. Gross hematuria refers to blood that is so plentiful in the urine…
- Retromingent Urinating backwards. Also an animal such as a raccoon that urinates backwards. As in: 'You have revealed…