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).
Left atrium
The upper right chamber of the heart. The left atrium receives oxygenated blood from the lungs and pumps it down into the left ventricle which delivers it to the body. NTER>
Read the definitionRandom terms
Show more- Fistula, anal See: Anal fistula
- Cancer, prostate Cancer of the gland that produces some of the components of semen fluid. Prostate cancer is the second…
- Congenital hemolytic jaundice Jaundice: Known also as hereditary spherocytosis (HS), this is a genetic disorder of the red blood cell…
- Drug resistance The ability of bacteria and other microorganisms to withstand a drug to which they were once sensitive and…
- TMJ syndrome Disorder of the temporo-mandibular joint(s) causing pain usually in front of the ear(s).
- Episcleritis Inflammation of the episclera, a thin membrane that covers the sclera (the white of the eye). Episcleritis is…
- ELBW Stands for extremely low birth weight. An ELBW baby is one born very prematurely weighing between 401 and…
- Allergic granulomatous angiitis See: Churg-Strauss syndrome
- Ultrafast CT Electron beam computerized tomography (EBCT), a new (and controversial) noninvasive test for the detection of…
- Smallpox vaccine A vaccine containing a live virus called vaccinia used to prevent smallpox. The vaccine does not contain the…
- Penis The external male sex organ used to copulate and ejaculate semen and to convey urine outside the body. In…
- ABR (auditory brainstem response) Abbreviation for auditory brainstem response. See: ABR test