Dictionary
2 ENTRIES FOUND:

fibril

noun fi·bril \ˈfī-brəl, ˈfi-\

Definition of FIBRIL

:  a small filament or fiber: as
a :  root hair
b (1) :  one of the fine threads into which a striated muscle fiber can be longitudinally split
(2) :  neurofibril
fi·bril·lar \ˈfi-brə-lər, ˈfī-\ adjective

Origin of FIBRIL

New Latin fibrilla, diminutive of Latin fibra
First Known Use: 1664

fibril

noun fi·bril \ˈfīb-rəl, ˈfib-\   (Medical Dictionary)

Medical Definition of FIBRIL

:  a small filament or fiber: as a :  one of the fine threads into which a striated muscle fiber can be longitudinally split b :  neurofibril

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