fib·ril·la·tion (fĭb′rə-lāshən, fī′brə-)
1. The forming of fibers.
a. Fine, rapid twitching of individual muscle fibers with little or no movement of the muscle as a whole.
b. Rapid uncoordinated twitching movements that replace the normal rhythmic contraction of the heart and may cause a lack of circulation and pulse.
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Indo-European & Semitic Roots Appendices
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