FIBRILLATION

n. twitching of the muscles (Medicine)

Fibrillation is the rapid, irregular, and unsynchronized contraction of the muscle fibers of the heart. There are two major classes of fibrillation, atrial fibrillation and ventricular fibrillation.Atrial fibrillation can be a chronic condition, usually treated with anticoagulation and sometimes with  conversion to  normal sinus rhythm.Ventricular fibrillation is rapidly fatal if not reversed by defibrillation.Fibrillation may sometimes be used after heart surgery to stop the heart from beating while any minor leaks are stitched up. Medifib
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Fibrillation /fi·bril·la·tion/ 1. the quality of being made up of fibrils. 2. a small, local, involuntary, muscular contraction, due to spontaneous [more]Fibrillation - Community and Resources

Noun
1. muscular twitching involving individual muscle fibers acting without coordination
(hypernym) twitch, twitching, vellication
(hyponym) atrial fibrillation
(derivation) fibrillate
2. act or process of forming fibrils
(hypernym) branching, ramification, fork, forking

n. fibrillation, twitching of the muscles (Medicine)