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.
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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).
Heroin addiction
Physical addiction to heroin, often with concurrent use of other opiates when heroin itself is not available. Treatment is by withdrawal, either gradual or sudden. Medication may be used to ease the physical effects of withdrawal, which…
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Show more- Ramsay Hunt syndrome Ramsay Hunt syndrome: A herpes virus infection of the geniculate nerve ganglion that causes paralysis of the…
- R-tPA Recombinant tissue plasminogen activator. See: Tissue plasminogen activator
- Tube, Fallopian The two Fallopian tubes, one on each side, transport the egg from the ovary to the uterus (the womb). The…
- Base in DNA A unit of the DNA. There are 4 bases: adenine (A), guanine (G), thymine (T), and cytosine (C). The sequence…
- Smallpox vaccination in eczema See Eczema vaccinatum
- German measles immunization The standard MMR vaccine is given to prevent measles, mumps and rubella (German measles). The MMR vaccine is…
- Error, alpha The statistical error (said to be 'of the first kind' or type I) made in testing an hypothesis when it is…
- Nail dysgenesis and hypodontia A genetic disorder characterized by abnormalities of the nails (nail dysgenesis) and the absence of several…
- Scleromalacia Degenerative thinning of the sclera, the tough white coat that covers most of the back of the eyeball and…
- Keratosis follicularis A genetic skin disease characterized by slowly progressive hardening of the skin (keratoses) around the hair…
- Penis, hypospadias of the Birth defect of the penis involving the urethra (the transport tube leading from the bladder to discharge…
- Adenoid cystic carcinoma A type of cancer that most often develops in the salivary glands of the head and neck. It may arise in other…