Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

fibril

play
noun fi·bril \ˈfī-brəl, ˈfi-\

Definition of fibril

  1. :  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

fibrillar play \ˈfi-brə-lər, ˈfī-\ adjective


Origin of fibril

New Latin fibrilla, diminutive of Latin fibra


First Known Use: 1664


Medical Dictionary

fibril

play play
noun fi·bril \ˈfīb-rəl, ˈfib-\

Medical Definition of fibril

  1. :  a small filament or fiber: asa:  one of the fine threads into which a striated muscle fiber can be longitudinally splitb:  neurofibril




Learn More about fibril

  1. Medical Dictionary: Definition of "fibril"


Seen and Heard

What made you want to look up fibril? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

the range of perception or understanding

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

soothe reduce perplex disapprove
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ