Definitions

1. verb

to break up into or be composed of fibrils; to undergo fibrillation, especially of the heart or muscles

“The cardiologist warned the patient that fibrillating heart muscles could lead to a heart attack if left untreated.”

2. verb

to form or be composed of fibrils

“The researcher discovered that the protein fibrillated into a complex network of fibers.”

3. noun

a fibrillation or fibrils

“The doctor detected fibrillation in the patient’s heart after performing an ECG.”