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).
Antitoxin
An antibody capable of destroying microorganisms including viruses and bacteria. An antitoxin provides passive immunity. For example, if a child gets whooping cough (diphtheria), an antitoxin prepared in horses against diphtheria may be…
Read the definitionRandom terms
Show more- Desquamation The shedding of the outer layers of the skin. For example, once the rash of measles fades, there is…
- Nude mice See: Nude mouse
- Anticoagulant agent A medication used as a 'blood-thinner' to prevent the formation of blood clots and to maintain open blood…
- Aortic dissection Aortic dissection: A progressive tear in the aorta. The inner lining (intima) of the aorta tears and blood…
- Stomach, Pavlov A pouch fashioned surgically from part of the stomach (but isolated from the rest of the stomach) that opens…
- Heterochromatin, constitutive Heterochromatin that is fixed and irreversible. Regions of constitutive heterochromatin are located at very…
- Pick disease Pick disease: A form of dementia characterized by a slowly progressive deterioration of social skills and…
- His-Werner disease This is a parasite (louse-borne) disease that was first recognized in the trenches of World War I and so was…
- Hormone, thyroxine A chemical substance made by the thyroid gland The thyroid gland uses iodine to make thyroid hormones…
- Dissociation In psychology and psychiatry, a perceived detachment of the mind from the emotional state or even from the…
- T-4 cell A type of T cell that has CD4 markers on its surface and participates in the immune response by recognizing…
- Fusiform Formed like a spindle, wider in the middle and tapering toward the ends. An aneurysm may be fusiform. The…