microfibril: Meaning and Definition of

mi•cro•fi•bril

Pronunciation: (mī"krō-fī'brul, -fib'rul), [key]
— n. Cell Biol.
  1. a microtubule, microfilament, or other fine threadlike structure of a cell.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.