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).
Syndrome, hypoplastic left heart
A form of congenital heart disease in which the whole left half of the heart (including the aorta , aortic valve, left ventricle and mitral valve) is underdeveloped (hypoplastic). Blood returning from the lungs has to flow through an…
Read the definitionRandom terms
Show more- Peromyscus maniculatus See: Deer mouse
- Death rate The number of deaths in the population divided by the average population (or the population at midyear) is…
- Fructose A sugar that occurs naturally in fruits and honey. Fructose has 4 calories per gram
- Rash, varicella Rash, varicella: Varicella (chickenpox) is characterized by a rash, often the first sign of the disease. The…
- Atlantoaxial Pertaining to the first and second cervical vertebrae which meet at a joint called the atlantoaxial joint…
- Parasite >Protozoa -- Malaria is caused by plasmodium, a protozoa, a single-cell organism that can only divide within…
- Power outage food safety >For the Freezer section: A freezer that is half full will hold food safely for up to 24 hours. A full…
- Colitis, amebic Amebic dysentery (inflammation of the intestine) with ulcers in the colon due to infection with an ameba…
- Thyrocalcitonin A hormone, also called calcitonin, produced by the thyroid gland that lowers the levels of calcium and…
- HTLV-II The human T-lymphotropic virus type II, which is closely related to HTLV-I
- Retinoic acid syndrome A syndrome that occurs from treatment with retinoic acid and is characterized by fever, dyspnea (difficulty…
- SAD A sore on a horse caused by an ill-fitting saddle. Also called a saddle sore.