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).
Arrhythmias, rapid
Abnormally rapid heart rhythms, medically termed tachycardia
Read the definitionRandom terms
Show more- Immunity, passive See: Passive immunity
- Laryngectomy, total A surgical procedure in which the whole voice box is removed, and the stoma opening into the larynx is…
- Evolutionarily conserved sequence A base sequence in a DNA molecule (or an amino acid sequence in a protein) that has remained largely…
- Othello syndrome The delusion of infidelity of a spouse or partner. The Othello syndrome affects males and, less often…
- Library In genetics, a library is an unordered collection of clones (i.e., cloned DNA from a particular organism)…
- Subluxation of the radial head See: Nursemaid's elbow
- Choanal atresia Blockage of the choana, the passageway from the back of one side of the nose to the throat. The choana is…
- Senescence Aging, the process of becoming old, or the state of being old. As we age, we senesce. No known substance can…
- Abiotic 1. Not associated with living organisms.2. Anything in the environment incapable of life, such as the soil or…
- Elastase 2 Neutrophil elastase, an enzyme in neutrophils that digests elastin. The gene ELA2 encoding elastase 2 is on…
- Control (genetic) The control of gene expression. Genetic control may be on the transcriptional or translational level…
- Theorem, Bayes See: Bayes theorem