DictionaryfiberThreadlike strand
noun

fiber

FY-ber/ˈfaɪbər/

A slender threadlike strand forming part of a material.

These fine flax fibers are drawn together into a thread.

Close view of natural flax fibers drawn into a thread.
Etymology

Latin fibra covered both filaments and entrails. English first used the word for internal body parts, then for threadlike structures in animals and plants; its deeper origin is uncertain.

In context

The Textile Notebook4:24
The fiber is about to run a relentless mechanical gauntlet, a progressive sequence that transitions it from tightly packed, dirty bales all the way into a perfectly twisted, continuous strand of yarn.
Cotton Fiber and Yarn Quality Testing

More examples

  • A wool fiber from my sweater clings to my coat.
  • Synthetic fibers make this rope strong and lightweight.
  • Under a microscope, individual fibers are visible in the paper.

Forms

fiber · fibers

fibrous adjective — Made of or containing threadlike strands.

Similar words

filament
Often names a fine strand in technical or biological contexts.
thread
Often consists of several fibers twisted together for sewing.