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.
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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).
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- Rectal exam, digital (DRE) An exam done to detect abnormalities that can be felt (palpated) from within the rectum. The doctor inserts a…
- Medical school syndrome A form of acute hypochondriasis that affects most people in training to be a physician. For example, when…
- Cleft palate prosthesis A prosthetic device designed to close the opening left by a cleft in the palate and thereby to improve…
- Candidemia Bloodstream infection with Candida, a yeast-like fungus. Persons at high risk for candidemia include…
- Fever, dumdum Also called kala-azar, a chronic, potentially fatal parasitic disease of the viscera (the internal organs)…
- Transesophageal echocardiography A diagnostic test, using a special probe placed within the esophagus, that employs ultrasound waves to make…
- Pneumococcal immunization Vaccination to help prevent infection by Streptococcus pneumoniae, also known as the pneumococcus bacterium…
- Amyotrophic lateral sclerosis (ALS) Amyotrophic lateral sclerosis (ALS): A classic motor neuron disease. Motor neuron diseases are progressive…
- Fusospirochetal gingivitis This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead…
- HPIV Human parainfluenza virus
- Pregnancy, alcohol in The consumption of alcohol during pregnancy carries the danger of damaging the fetus and causing fetal…
- Pregnancy calendar A pregnancy calendar is a chronological depiction of changes in a pregnant woman and the embryo/fetus during…