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).
AV node
An electrical relay station between the atria (the upper) and the ventricles (the lower chambers of the heart). Electrical signals from the atria must pass through the AV node to reach the ventricles. The AV node is one of the major…
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Show more- Cranial nerve, first The cranial nerves emerge from or enter the skull (the cranium), as opposed to the spinal nerves which emerge…
- Cell, antigen-presenting A cell that can 'present' antigen in a form that T cells can recognize it. The cells that can 'present'…
- Nursing home A residential facility for persons with chronic illness or disability, particularly older people who have…
- Aspartame A man-made sweetener with almost no calories used in place of sugar. A diet program with aspartame and…
- Amyloidosis, primary Amyloidosis, primary: A disorder of plasma cells (special white blood cells that produce antibodies), this is…
- Neural tube defect Pain along the course of a nerve.
- Erythromycin Erythromycin: Erythromycin is a common antibiotic for treating bacterial infection. Sold under many brand…
- Exocrine Pertaining to the secretion of a substance out through a duct. The exocrine glands include the salivary…
- Schizophrenia Schizophrenia: One of several brain diseases whose symptoms that may include loss of personality (flat…
- Pregnancy, extrauterine A pregnancy that is not in the usual place and is located outside the inner lining of the uterus. A…
- Rib, fluctuating One of the last two ribs. A rib is said to be 'fluctuating' if it does not attach to the sternum (the breast…
- Norwalk virus A family of small round viruses that are an important cause of viral gastroenteritis (viral inflammation of…