資料來源 : Webster's Revised Unabridged Dictionary (1913)

Fibrillation \Fi`bril*la"tion\, n.
   The state of being reduced to fibers. --Carpenter.

資料來源 : WordNet®

fibrillation
     n 1: muscular twitching involving individual muscle fibers acting
          without coordination
     2: act or process of forming fibrils