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).
Hormone, triiodothyronine
A hormone made by the thyroid gland. It has three iodine molecules attached to its molecular structure. Iodine is naturally found in seafood, bread, seaweed, and ordinary table salt. Triiodothyronine is the most powerful thyroid hormone…
Read the definitionRandom terms
Show more- Otitis media, acute See: Acute otitis media
- Scarification The making of many small, superficial scratches in the skin. Scarification may be done in giving a smallpox…
- Vallecula An anatomic term for a crevice, furrow or depression. There are a variety of valleculae including one in the…
- Reaction, polymerase chain See: Vasovagal reaction.
- Cramp, writer's A dystonia that affects the muscles of the hand and sometimes the forearm and only occurs during handwriting…
- Juxtavesicular Near the bladder. From juxta-, meaning near, nearby, or close + vesicular, referring to the bladder (the…
- HGD The gene encoding an enzyme called homogentisate 1,2-dioxygenase (also known as homogentisate oxidase). HGD…
- Bromine A brownish-red element that is a liquid at room temperature, dissolves in water, and has a bleach-like…
- Extrasystole A premature contraction of the heart that is independent of the normal rhythm of the heart and that arises in…
- HPS 1. Hantavirus pulmonary syndrome.2. Hermansky-Pudlak syndrome
- Circinate balanitis A form of skin inflammation around the penis in males with Reiter's syndrome. The skin around the shaft and…
- Extrinsic 1. Not an essential or inherent part of a something such as a structure.2. Coming from the outside. Extrinsic…