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).
Central line
A catheter (tube) that is passed through a vein to end up in the thoracic (chest) portion of the vena cava (the large vein returning blood to the heart) or in the right atrium of the heart. Central lines have a number of different uses. A…
Read the definitionRandom terms
Show more- Azoospermia No sperm at all. The ejaculate is completely devoid of sperm. By contrast, in oligospermia (literally, few…
- Dementia, vascular See Vascular dementia
- NIDCR (National Institute of Dental Research) Al Research: One of the National Institutes of Health (NIH) in the U.S., the NIDCR is for dental and other…
- Radiotherapy, stereotactic Radiation therapy in which a number of precisely aimed beams of ionizing radiation coming from different…
- Flu, bird See: Avian influenza
- Systole The time period when the heart is contracting. The period specifically during which the left ventricle of the…
- Macrogenitosomia Condition in which the external sex organs are prematurely enlarged or abnormally enlarged. In males, it is…
- Decompression 1. In general, the removal of pressure.2. In surgery, a procedure to remove pressure on a structure, as in…
- Neisseria infection See: Meningococcal infection
- Epidemiology, classical The study of populations in order to determine the frequency and distribution of disease and measure risks.
- Nose, runny Rhinorrhea is the medical term for this common problem. From the Greek words 'rhinos' meaning 'of the nose'…
- Addison anemia Anemia: A blood disorder caused by a lack of vitamin B12. Patients who have this disorder do not produce the…