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).
Deficiency, niacin
See: Pellagra
Read the definitionRandom terms
Show more- Hypopnea Literally, underbreathing. Breathing that is shallower or slower than normal. Hypopnea is distinct from apnea…
- Obstruction Blockage of a passageway. See, for example: Airway obstruction; Intestinal obstruction
- Negative calorie diet The Negative calorie diet is a weight loss concept based upon the premise that consumption of foods with a…
- Potomania An intense and persistent desire to drink alcohol to excess. Synonymous with dipsomania
- Hepatitis D Liver inflammation due to the hepatitis D virus (HDV), which only causes disease in patients who already have…
- Hypochloremia Low blood levels of chloride. Chloride is the major anion found in the fluid outside of cells and in blood…
- Transition, menopause Menopause: A woman can usually tell if she is approaching menopause because her menstrual periods starts…
- Erythroplakia A reddened patch with a velvety surface found in the mouth
- Encephalitis, Rasmussen A rare progressive neurological disorder that is characterized by intractable seizures and progressive…
- Osteotomy, cuneiform Surgical removal of a triangular piece of bone
- Pantothenic acid Pantothenic acid is vitamin B5, one of the less well known B vitamins, perhaps because it is widely…
- Placenta praevia A placenta implanted near the outlet of the uterus, so that at the time of delivery the placenta precedes the…