English Lexicon

Fiber

/ˈfaɪ.bər/
nounCEFR B2 (Upper)Top #2500 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A thread or a thin thread-like structure, such as is found in cloth or rope, or in plant and animal tissue.

    "The rope is made of strong natural fibers."
  2. 2

    Dietary fiber; plant material that cannot be digested but that helps food move through the digestive system.

    "Whole grains are an excellent source of dietary fiber."

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Linguistic Origin & Historical Etymology

Derived from the Latin word 'fibra', meaning a filament, fiber, or entrail, entering Middle English via Old French in the 14th century. Over time, the meaning broadened from anatomical fibers to textile threads and modern technological and nutritional applications.

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