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).
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…
Read the definitionRandom terms
Show more- PAP 1. Prostatic acid phosphatase. 2. Pulmonary artery pressure
- Biopsy, liver See: Liver biopsy
- Castleman disease A disorder of lymphoid tissue (lymphadenopathy) with massive overgrowth (hyperplasia) of lymph nodes…
- Mg Abbreviation for milligram, a unit of measurement of mass in the metric system equal to a thousandth of a…
- Test, auditory brainstem response A widely used test of the newborn baby as to their neurologic status and developmental progress. The…
- Valley fever A disease also called coccidioidomycosis (CM) due to a fungus called Coccidioides immitis. About 40% of…
- Antagonist In biochemistry, an antagonist acts against and blocks an action. For example, insulin lowers the level of…
- Adult acne Popular name for rosacea. For more information, see: Rosacea
- Hypoplastic left heart syndrome A form of congenital heart disease in which the whole left half of the heart (including the aorta , aortic…
- Papilloma, cutaneous A small tag of skin that may have a stalk (a peduncle). Cutaneous papillomas may appear on the skin almost…
- Colectomy >Right hemicolectomy -- in which the right part of the colon is removed, >Left hemicolectomy -- where the…
- Biopsy, stereotactic needle See: Stereotactic needle biopsy