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).
Chordae tendineae
Thread-like bands of fibrous tissue which attach on one end to the edges of the tricuspid and mitral valves of the heart and on the other end to the papillary muscles, small muscles within the heart that serve to anchor the valves
Read the definitionRandom terms
Show more- Methadone A synthetic opiate. The most common medical use for methadone is as a legal substitute for heroin in…
- Etymology, medical See: Medical etymology
- Prostate acid phosphatase (PAP) Prostatic acid phosphatase, an enzyme that is produced by the prostate (and other tissues) and that is…
- Ciliary neuralgia A distinctive syndrome of headaches, better known today as cluster headache. There are two main clinical…
- Intelligence quotient An attempt to measure the intelligence of someone. Abbreviated IQ. The IQ score is usually based upon the…
- Cluster In epidemiology, an aggregation of cases of a disease or another health-related condition, such as a cancer…
- Aneurysm, cardiac Outpouching of an abnormally thin portion of the heart wall. An aneurysm is a localized widening (dilatation)…
- Exemestane An oral antiestrogen. Exemestane inhibits the enzyme aromatase in the adrenal glands that produces the…
- Rib cage The structure formed by the thoracic vertebrae and ribs, the sternum (breastbone), and the costal cartilages…
- Syndrome, radial aplasia-thrombocytopenia See Syndrome, TAR
- Premie Short and slangy for a premature baby. A preterm infant. Also often spelled (for obscure reasons) preemie.
- OPCA Olivopontocerebellar atrophy