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).
Pulmonary artery
One of the two vessels which are formed as terminal branches of the pulmonary trunk and convey unaerated blood to the lungs. The two pulmonary arteries differ in length and anatomy. The right pulmonary artery is the longer of the two. It…
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Show more- Fecalith A hard stony mass of feces. A fecalith can obstruct the appendix, leading to appendicitis. Fecaliths also can…
- Prophase chromosome A chromosome at the prophase stage in the cell cycle, before metaphase (when a chromosome is most highly…
- Centenarian Someone who is 100 or more years old. Someone 110 years old and over (no upper limit) may also be referred to…
- Crohn ileitis Inflammation of the ileum (the farthest segment of the small intestine) due to Crohn disease. Crohn disease…
- OMS Abbreviation for the Organisation Mondiale de la Sante, the French name for the World Health Organization…
- Single transverse palmar crease Preferable term for what historically was called a simian crease. See: Simian crease
- Tympany A hollow drum-like sound produced when a gas-containing cavity is tapped sharply. Tympany is heard if the…
- Women's Health Initiative A hospital for the exclusive use of women. The first hospital called by that name was the Woman's Hospital of…
- Y sex-determining region A region on the Y chromosome that determines the sex of the individual. This region goes by the symbol SRY…
- Intrauterine contraceptive device (IUD) A device inserted into the uterus (womb) to prevent conception (pregnancy). The IUD can be a coil, loop…
- Muscle, teres minor >The teres minor muscle; >The infraspinatus muscle, which (like the teres minor) helps in the outward turning…
- African tapeworm The beef tapeworm (Taenia saginata), the most common of the big tapeworms that parasitizes people, contracted…