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).
P.r.n.
Abbreviation meaning 'when necessary' (from the Latin 'pro re nata', for an occasion that has arisen, as circumstances require, as needed). One of a number of hallowed abbreviations of Latin terms that have traditionally been used in…
Read the definitionRandom terms
Show more- Multiple miscarriage More than one miscarriage for a woman. In multiple miscarriages, there is about a 5 percent chance that one…
- Tinea cruris A superficial fungus infection of the crotch and perineum known popularly as jock itch. Good general hygiene…
- Strontium ranelate An agent consisting of two atoms of stable strontium and ranelic acid. Strontium ranelate stimulates the…
- Hospital-acquired infection An infection caught while hospitalized. The medical term for a hospital-acquired infection is 'nosocomial.'…
- Mixed-lineage leukemia A type of childhood leukemia in which a piece of chromosome 11 has been translocated (broken off and attached…
- Hematuria Blood in the urine. Hematuria may or may not be accompanied by pain, but it is always abnormal and should be…
- Dermatoscopy A noninvasive diagnostic technique for the early diagnosis of melanoma and the evaluation of other pigmented…
- Surveillance and containment See: Ring vaccination
- Spine, slipped See: Spondylolisthesis
- Caulophyllum thalictroides Blue cohosh
- Jadassohn-Lewandowski Syndrome This syndrome is a form of what is called elephant nails from birth (pachyonychia congenita). The…
- Hemoglobin, glycosylated Hemoglobin to which glucose is bound. Glycosylated hemoglobin is tested to monitor the long-term control of…