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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Varicose vein
A dilated (widened) tortuous (twisting) vein, usually involving a superficial vein in the leg, often associated with incompetency of the valves in the vein. These visible and bulging veins are often associated with symptoms such as tired…
Read the definitionRandom terms
Show more- Q.2h On a prescription, every two hours
- Stress test, pharmacologic There are a diversity of pharmacologic stress tests. Here this refers specifically to a pharmacologic cardiac…
- Blastocyst A thin-walled hollow structure in early embryonic development that contains a cluster of cells called the…
- Pathogenic Causing disease or capable of doing it. Pathogenic bacteria are disease-causing bacteria. For example…
- Neo- (prefix) Prefix meaning new. From the Greek 'neos', new, young, fresh, recent. Examples of terms starting with 'neo-'…
- Waardenburg, Petrus Johannes See: Stickler syndrome.
- DRE (digital rectal exam) An exam done to detect abnormalities that can be felt (palpated) from within the rectum. The doctor inserts a…
- Codes, drug caution Abbreviations on medications that indicate caution. While not a part of the historical heritage of ancient…
- Oral contraceptive A birth control pill taken by mouth. Most oral contraceptives include both estrogen and progesterone. When…
- Cockroach allergy Allergy: A condition that manifests as an allergic reaction when one is exposed to tiny particles from…
- Radical prostatectomy A surgery procedure that removes the entire prostate gland plus some surrounding tissue. During the procedure…
- Scooter injury An injury sustained on a scooter, a foot-operated board mounted tandemly on two wheels with an upright…