fibrillation fibrillated • fibrilled · · · Info · Definitions · Characters · · fibrillation · · Text Latin · · Script 12 · · Length Definitions · · · (noun) muscular twitching involving individual muscle fibers acting without coordination. · · Noun Definition 1 (noun) act or process of forming fibrils. · · Noun Definition 2 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 f latin small letter f U+0066 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074