fibrils is a form of:

Fibril



noun
1.
(វេជ្ជសាស្ត្រ) សរសៃឆ្មារ, សរសៃល្អិត (ដូចឫសសក់ដទៃពីសរសៃឈាម)
ENGLISH MEANING
noun
1.
A small fiber; the branch of a fiber; a very slender thread; a fibrilla.