fibrillate fibrillary • fibrillated · · · Info · Definitions · Characters · · fibrillate · · Text Latin · · Script 10 · · Length Definitions · · · (verb) make fine, irregular, rapid twitching movements. Example: "His heart fibrillated and he died." · · Verb Definition 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 l latin small letter l U+006C r latin small letter r U+0072 t latin small letter t U+0074