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).
RRNA
Ribosomal RNA, a molecular component of a ribosome, the cell's essential protein factory. Strictly speaking, ribosomal RNA (rRNA) does not make proteins. It makes polypeptides (assemblies of amino acids) that go to make up proteins. A tiny…
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Show more- Oscillopsia Oscillating vision. Swinging vision. In oscillopsia, objects seem to swing, move back and forth, jerk, or…
- Fiber, soluble and insoluble Fiber: Fiber (the portion of plants that cannot be digested by the human digestive tract) is classified as…
- Peer review Scrutiny by one's peers (equals). Peer-reviewed articles appearing in medical journals have been scrutinized…
- Papilledema Swelling of the head of the optic nerve, a sign of increased intracranial pressure. The optic nerve head…
- Paralytic ileus Paralysis of the intestine. To be termed 'paralytic ileus,' the intestinal paralysis need not be complete…
- Coarctation of the aorta A congenital constriction of the aorta, impeding the flow of blood below the level of the constriction and…
- Intraoperative radiation therapy Radiation treatment given during surgery. Also called IORT. See also radiation therapy
- Infant carbohydrate intake Carbohydrates (glucose, lactose, sucrose, galactose, etc.) are sugars or several sugars linked together…
- IAVI International AIDS Vaccine Initiative. A remarkable example of a global not-for-profit organization working…
- Lancet device See: Lancing device
- Superior vena cava syndrome Superior vena cava syndrome: The symptoms that result from compression of the large vein that carries blood…
- Brachy- A short head, one that is short in diameter from front to back. Brachycephaly is a frequent feature of…