MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Valve, tricuspid
One of the four heart valves, the tricuspid valve is the first one that blood encounters as it enters the heart. The tricuspid valve is situated between the right atrium and right ventricle and allows blood to flow only from the atrium…
Read the definitionRandom terms
Show more- FDA recalls Recalls: The recall of a defective or possibly harmful product by the US Food & Drug Administration (the…
- System, sympathetic nervous A part of nervous system that accelerates the heart rate, constricts blood vessels, and raises blood…
- Propositus A male through whom a family medically comes to light (is first ascertained). Also called the proband or…
- Pediatric pyelonephritis Pediatric kidney infection. See: Urinary tract infection in children
- Conjoined twins See: Conjoined twin
- Euphoria Elevated mood. Euphoria is a desirable and natural occurrence when it results from happy or exciting events…
- Chilblain A cold injury which, while painful, causes little or no permanent impairment. It appears as red, swollen skin…
- Autosomal recessive A genetic condition that appears only in individuals who have received two copies of an autosomal gene, one…
- Tennis elbow A painful injury to the tendon that is attached to the outer part of the elbow due to repetitive twisting of…
- ThinPrep Pap test A modified Pap test technique designed to reduce some of the technical problems inherent in the traditional…
- Atrophic vaginitis Thinning of the lining (the endothelium) of the vagina due to decreased production of estrogen. This may…
- Insufficiency, small intestine See: Short bowel syndrome