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).
Thyroxine
Abbreviated T4. A hormone made by the thyroid gland that has four iodine molecules attached to its molecular structure. T4 and other thyroid hormones help regulate growth and control the rate of chemical reactions (metabolism) in the body
Read the definitionRandom terms
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- Schizoaffective disorder Schizoaffective disorder: A mood disorder that is coupled with some symptoms resembling those of…
- Orthodontic treatment (dental braces) Dental braces: The use of devices to move teeth or adjust underlying bone. The ideal age for starting…
- Psychosis In the general sense, a mental illness that markedly interferes with a person's capacity to meet life's…
- Regenerate To reproduce or renew something lost. For example, after an injury, the liver has the capacity to regenerate
- LSD Lysergic acid diethylamide, an hallucinogen. LSD is an abbreviation of the German term…
- Nerve block See: Neuron.
- Systems biology The study of biological systems taking into account the interactions of the key elements such as DNA, RNA…
- Alienist The term 'alienist' was heading for obsolescence until it was returned to a position of some prominence by…
- Femur The femur is the bone in the leg that extends from the hip to the knee. The femur constitutes the upper leg…