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).
Cataract, primary
A cataract that develops independently of other diseases. A primary cataract is in contrast to a secondary cataract, one that is secondary to another disease
Read the definitionRandom terms
Show more- Endoscopic retrograde cholangiopancreatography Abbreviated ERCP. A procedure done to diagnose and treat problems in the liver, gallbladder, bile ducts, and…
- Common cold Common cold: A viral upper respiratory tract infection. This contagious illness can be caused by many…
- Biliary sludge A mixture of microscopic particulate matter in bile that occurs when particles of material precipitate from…
- Disease, subclinical An illness that stays below the surface of clinical detection. A subclinical disease has no recognizable…
- Syndrome, Kostmann A condition with a lack of neutrophils (a type of white blood cell that is important in fighting infection)…
- Atresia, biliary Congenital absence or closure of the major bile ducts, the ducts that drain bile from the liver. Biliary…
- Crossing over The exchange of genetic material between two paired chromosomes. Crossing over is a way to recombine the…
- Disorder, borderline personality A serious mental illness characterized by pervasive instability in moods, interpersonal relationships…
- Recurrent abortion The occurrence of 3 or more miscarriages (which are medically termed 'spontaneous abortions') with no…
- Nucleic acid hybridization A technique in which single-stranded nucleic acids (DNA or RNA) are allowed to interact so that complexes…
- Hysterectomy, abdominal Hysterectomy, abdominal: Surgical removal of the uterus through an incision made in the abdominal wall. As…
- Prepuce, inflammation of the Inflammation of the prepuce (the foreskin of the penis) is called posthitis. In the uncircumcised male…