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).
Triiodothyronine
A hormone made by the thyroid gland. It has three iodine molecules attached to its molecular structure. It is the most powerful thyroid hormone, and affects almost every process in the body, including body temperature, growth, and heart…
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Show more- Food irradiation A food safety technology designed to eliminate disease-causing germs from foods. Treating food with ionizing…
- Gene, candidate Any gene thought likely to cause a disease. The gene may be a candidate because it is located in a particular…
- Atrophy, peroneal muscular Charcot-Marie-Tooth disease
- Vasovagal reaction A reflex of the involuntary nervous system that causes the heart to slow down (bradycardia) and that, at the…
- Amino acid, nonessential An amino acid that can be made by humans and so is not essential to the human diet. There are 11 nonessential…
- Sleep apnea Sleep apnea: The temporary stoppage of breathing during sleep, often resulting in daytime sleepiness. Apnea…
- Rh factor An antigen found in the red blood cells of most people: those who have Rh factor are said to be Rh positive…
- Angina Angina: Chest pain due to an inadequate supply of oxygen to the heart muscle. The chest pain of angina is…
- Cyst, tarsal Also called a chalazion or a Meibomian cyst, an inflammation of the oil gland of the eyelid.
- Chemotherapy L ODYvAlign=top bgColor=#cccccc colSpan=2> vAlign=top width='100%' bgColor=#ffffff>Our Chemotherapy Main…
- Brain stem The stemlike part of the brain that is connected to the spinal cord. Or conversely, the extension of the…
- Pulseless disease Takayasu disease. Called pulseless disease because inflammation of blood vessels (vasculitis) can lead to…