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).
Thyroid hormone
A chemical substance made by the thyroid gland for export into the bloodstream. The thyroid gland needs iodine to make thyroid hormones. The two most important thyroid hormones are thyroxine (T4) and triiodothyronine (T3). The thyroid…
Read the definitionRandom terms
Show more- PAM Primary amebic meningoencephalitis
- Wind chill See: Round window.
- MYH syndrome See: MYH
- Keratitis, acanthamoeba See: Acanthamoeba keratitis
- Aromasin Brand name of exemestane, an oral antiestrogen. Aromasin inhibits the enzyme aromatase in the adrenal glands…
- C. elegans genome All of the genetic information contained in the roundworm Caenorhabditis elegans (C. elegans). The genomes of…
- Polyuria The excessive passage of urine (at least 2.5 liters per day for an adult) resulting in profuse urination and…
- Study, stomach emptying Also called a gastric emptying study, this test evaluates the emptying of food from the stomach. For a…
- Borrelia A group of bacteria that are helical spirochetes of the genus Borrelia. Some species of Borrelia cause…
- Unresolved grief Grief characterized by the extended duration of the symptoms, by interference of the grief symptoms with the…
- Northern blot A technique in molecular biology, used mainly to separate and identify pieces of RNA. Called a Northern blot…
- Congenital webbed neck syndrome See: Klippel-Feil sequence