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).
Septum, heart
The septum of the heart is the dividing wall between the right and left sides of the heart. That portion of the septum that separates the two upper chambers (the right and left atria) of the heart is termed the atrial (or interatrial)…
Read the definitionRandom terms
Show more- Preauricular tag A common minor anomaly, this is a rudimentary tag of ear tissue. It often contains a core of cartilage. The…
- Cerebrospinal fluid CSF. A watery fluid, continuously produced and absorbed, which flows in the ventricles (cavities) within the…
- Erythema dose The amount of radiation which, applied to the skin, makes it turn temporarily red (erythematous)
- Meiotic drive Preferential selection during meiosis (germ cell production). In meiotic drive there is preferential…
- Asian flu A pandemic of influenza A (H2N2) in 1957-58. First identified in China in late February 1957, the Asian flu…
- Phen-Fen The once-popular diet-drug combination of fenfluramine and phentermine that, amidst much media attention, was…
- Subdural hematoma Bleeding into the space between the dura (the brain cover) and the brain itself. This space is called the…
- Rate, neonatal mortality The number of children dying under 28 days of age divided by the number of live births that year. The…
- STL1 Stickler syndrome, type I. See: Stickler syndrome
- Septum, heart The septum of the heart is the dividing wall between the right and left sides of the heart. That portion of…
- PINK1 Also called conjunctivitis. Redness or irritation of the conjunctivae, the membranes on the inner part of the…
- Unconscious 1. Interruption of awareness of oneself and one's surroundings, lack of the ability to notice or respond to…