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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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
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- Endocrine Pertaining to hormones and the glands that make and secrete them into the bloodstream through which they…
- Toxic hepatitis Hepatitis (inflammation of the liver) caused by an industrial chemical such as carbon tetrachloride or…
- Adeno- Prefix referring to a gland, as in adenoma and adenopathy. From the Greek aden meaning originally 'an acorn'…
- Feed contaminant A substance contaminating animal feed. Contaminants in animal feed can threaten human health. There are two…
- Syndrome, Pickwickian The combination of obesity, somnolence (sleepiness), hypoventilation (underbreathing), and plethoric (red)…
- Onset In medicine, the first appearance of the signs or symptoms of an illness as, for example, the onset of…
- Spermatogenesis The process of sperm formation. The term was created from the prefix 'spermato-' (Greek sperma, the seed or…
- DEA Every prescription written in the United States bears a DEA number, that of the prescribing doctor, the DEA…
- Trimethylaminuria (TMA) An inborn error of metabolism associated with an offensive body odor, the smell of rotting fish, due to the…
- Apex From the Latin meaning summit, the apex is the tip of a pyramidal or rounded structure, like the lung or the…
- Tooth, wisdom One of the large molars in the very back of the jaw. The human jaw has changed in size over the course of…