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.
- 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).
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- Abscission To remove tissue by cutting it away, as in surgery
- Red jungle fowl genome The genome of Gallus gallus, the ancestor of domestic chickens. See: Chicken genome
- Quaque (on prescription) If a medicine is to be taken every so- many hours, it is written 'q_h'; the 'q' standing for the Latin word…
- Cordectomy 1. Surgical removal of a vocal cord. 2. Surgical removal of part of the spinal cord. From cord + -ectomy…
- VACTERL association A nonrandom association of birth defects. VACTERL is an mnemonic in which the letters V, A, C, T, E, R, and L…
- Aorta, abdominal The abdominal aorta is the final section of the aorta, the largest artery in the body. It is a continuation…
- Renal Fanconi syndrome Failure of the tubules in the kidney to reabsorb small molecules, causing increased urinary loss of…
- Carbon monoxide hemoglobin See: Carboxyhemoglobin
- Pleurodesis A procedure that causes the membranes around the lung to stick together and prevents the buildup of fluid in…
- Cardiomyopathy, hypertrophic Heart disease. A nonspecific term applicable to any and all diseases of the heart. From cardio- + the Greek…
- Ecstatic Pertaining to ecstasy, a state of rapture and trancelike elation
- Immunosuppressant An agent that can suppress or prevent the immune response. Immunosuppressants are used to prevent rejection…