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).
Genetic code
The instructions in a gene that tell the cell how to make a specific protein. A, T, G, and C are the 'letters' of the DNA code. They stand for the chemicals adenine, thymine, guanine, and cytosine, respectively, that make up the nucleotide…
Read the definitionRandom terms
Show more- STOP (selective tubal occlusion procedure) A nonsurgical form of permanent birth control in which a physician inserts a 4-centimeter (1.6 inch) long…
- Polio vaccine, killed See: Polio vaccine, inactivated
- Fibrillation, ventricular An abnormal irregular heart rhythm whereby there are very rapid uncoordinated fluttering contractions of the…
- Palsy, laryngeal Paralysis of the recurrent laryngeal nerve, a branch of the vagus nerve (a long and important nerve that…
- Stone, renal A stone in the kidney (or lower down in the urinary tract). Also called a kidney stone. Renal stones are a…
- Arteriosclerotic aneurysm A localized widening (aneurysm) of a vessel that occurs because the vessel wall is weakened by…
- Third stage of labor The part of labor from the birth of the baby until the placenta (afterbirth) and fetal membranes are…
- Allopath Or allopathist. A term sometimes applied to a physician who practices conventional medicine (allopathy)
- Journal of the American Medical Association A medical journal sponsored by the National Cancer Institute (NCI), one of the National Institutes of Health…
- Protein kinase A An enzyme system that is activated by cyclic adenosine monophosphate (cAMP) and that catalyzes the activity…
- Cuts Severed skin. Washing a cut or scrape with soap and water and keeping it clean and dry is all that is…
- Amyotrophic lateral sclerosis 5 ALS5. A form of amyotrophic lateral sclerosis (ALS) inherited in an autosomal recessive manner due to…