fiber

play
noun fi·ber \ˈfī-bər\

Definition of fiber

  1. 1 :  a thread or a structure or object resembling a thread: such asa (1) :  a slender root (as of a grass) (2) :  an elongated tapering thick-walled plant cell void at maturity that imparts elasticity, flexibility, and tensile strengthb (1) :  a strand of nerve tissue :  axon, dendrite (2) :  one of the filaments composing most of the intercellular matrix of connective tissue (3) :  one of the elongated contractile cells of muscle tissuec :  a slender and greatly elongated natural or synthetic filament (as of wool, cotton, asbestos, gold, glass, or rayon) typically capable of being spun into yarnd :  mostly indigestible material in food that stimulates the intestine to peristalsis —called also bulk, roughage

  2. 2 :  material made of fibers; especially :  vulcanized fiber

  3. 3a :  an element that gives texture or substanceb :  basic toughness :  strength, fortitudec :  essential structure or character the very fiber of a person's being

fibered

play \ˈfī-bərd\ adjective

Examples of fiber in a Sentence

  1. It's important to get enough fiber in your diet.

  2. What foods do you recommend as good sources of fiber?

  3. foods that are high in fiber

  4. The fabric is made from a mix of synthetic fibers.

  5. The natural fibers allow the fabric to breathe.

  6. The paper is made from both cotton and wood fiber.

  7. Nylon is a very strong man-made fiber.

  8. The police examined hair and bits of fiber found in the victim's car.

Recent Examples of fiber from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fiber'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of fiber

Middle French fibre, from Latin fibra

Other Textiles Terms



FIBER Defined for English Language Learners

fiber

play
noun

Definition of fiber for English Language Learners

  • : plant material that cannot be digested but that helps you to digest other food

  • : a thin thread of natural or artificial material that can be used to make cloth, paper, etc.

  • : material (such as cloth) that is made from thin threads : something made of fibers


FIBER Defined for Kids

fiber

play
noun fi·ber \ˈfī-bər\

Definition of fiber for Students

  1. 1 :  a thread or a structure or object resembling a thread

  2. 2 :  plant material that cannot be digested


Medical Dictionary

fiber

noun fi·ber
variants: or chiefly British

fibre

\ˈfī-bər\play

Medical Definition of fiber

  1. 1:  a thread or a threadlike structure or object: asa:  a strand of nerve tissue :  axon, dendriteb:  one of the filaments composing most of the intercellular matrix of connective tissuec:  one of the elongated contractile cells of muscle tissue

  2. 2:  mostly indigestible material in food that stimulates the intestine to peristalsis—called also bulk, dietary fiber, roughage



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