MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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.
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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).
Nicotinic acid
Deficiency of nicotinic acid (also known as niacin), one of the B-complex vitamins, causes pellagra. Pellagra was known as the 'disease of the four D's' -- dermatitis, diarrhea, dementia and death. The disease is specifically characterized…
Read the definitionRandom terms
Show more- Public health school A school designed to teach public health and train public health professionals. The first school of public…
- Akathisia A movement disorder characterized by a feeling of inner restlessness and a compelling need to be in constant…
- Disorder, social anxiety Excessive fear of embarrassment in social situations that is extremely intrusive and can have debilitating…
- Neurologist A doctor who specializes in the diagnosis and treatment of disorders of the nervous system
- Ligature In surgery, a filament or thread used to tie something, such a blood vessel to prevent it from bleeding or…
- Syndrome, Creutzfeldt-Jakob Better known as Creutzfeldt-Jakob disease (CJD). A dementing disease of the brain. It is believed due to an…
- Disease, Hirschsprung A congenital abnormality (birth defect) of the bowel in which there is absence of the ganglia (nerves) in the…
- Supernumerary placenta A succenturiate or accessory placenta
- Cuts Severed skin. Washing a cut or scrape with soap and water and keeping it clean and dry is all that is…
- End stage The last phase in the course of a progressive disease. As in end-stage liver disease, end-stage lung disease…
- Aldrex Trade name of the insecticide aldrin. See: Aldrin and dieldrin
- Mucopolysaccharidosis type IVB Morquio syndrome due to deficiency of the enzyme beta-galactosidase. See also Mucopolysaccharidosis