1 fiber | Definition of fiber
Logo
Menu
dictionary thesaurus

fiber

noun
fi·​ber | \ ˈfī-bər How to pronounce fiber (audio) \

Definition of fiber

1 : a thread or a structure or object resembling a thread: such as
a(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 strength
b(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 tissue
c : a slender and greatly elongated natural or synthetic filament (as of wool, cotton, asbestos, gold, glass, or rayon) typically capable of being spun into yarn
d : mostly indigestible material in food (such as legumes, whole grains, and vegetables) that stimulates the intestine to peristalsis and promotes elimination of waste from the large intestine : bulk, roughage dietary fiber trying to get more fiber in her diet
2 : material made of fibers especially : vulcanized fiber
3a : an element that gives texture or substance
b : basic toughness : strength, fortitude
c : essential structure or character the very fiber of a person's being
Other Words from fiber Synonyms & Antonyms Example Sentences Learn More about fiber

Keep scrolling for more

Other Words from fiber

fibered \ ˈfī-​bərd How to pronounce fibered (audio) \ adjective

Examples of fiber in a Sentence

It's important to get enough fiber in your diet. What foods do you recommend as good sources of fiber? foods that are high in fiber The fabric is made from a mix of synthetic fibers. The natural fibers allow the fabric to breathe. The paper is made from both cotton and wood fiber. Nylon is a very strong man-made fiber. The police examined hair and bits of fiber found in the victim's car.
See More

Recent Examples on the Web

 Some parents will resent a teacher strike with every fiber of their being. — Heidi Stevens, chicagotribune.com, "Column: In the event of a teacher strike, this CPS mom’s wish list," 29 Aug. 2019 In addition to providing healthful fat, plant protein, and fiber, a one ounce portion of chia seeds packs nearly 20% of the daily target for calcium. — Cynthia Sass, Mph, Health.com, "7 Chia Seed Benefits, According to a Nutritionist," 27 Aug. 2019 Barton said connectivity goes beyond laying more fiber-optic cable. — Melissa Repko, Dallas News, "Some Dallas area residents don't have reliable internet access. The Dallas Fed wants to change that," 6 Aug. 2019 Every fiber of the organization’s being grabs on every data point that tells you that the first dip in revenues is cyclical, not structural. — Eric Johnson, Vox, "“The $300 textbook is dead,” says the CEO of textbook maker Pearson," 2 Aug. 2019 Nation-states in the 21st century have become cyborgs, with sinews of fiber-optic cable and software code. — Owen Thomas, SFChronicle.com, "The internet promised us a world without borders. Ooops," 24 July 2019 As the film’s protagonist, C.J. leverages every fiber of her knowledge and skillset in science and advance technology to reverse fate, only to find out that violence doesn’t change. — Terrence Chappell, Teen Vogue, "Netflix's "See You Yesterday" Is About the Power of Black Girls in STEM," 5 June 2019 With a bit of planning, breakfast can be a great opportunity to get dairy, fiber, fruits and even vegetables into a child’s diet. — Melissa Rayworth, Houston Chronicle, "Healthful breakfast on a busy school morning? It’s not so hard," 14 Aug. 2019 Verizon also objected to other Rochester fees, including $10,000 up front for deploying up to 2,500 linear feet of underground fiber, plus $5,000 annually in subsequent years. — Jon Brodkin, Ars Technica, "Verizon sues city to avoid paying 5G fees, says the FCC has its back," 13 Aug. 2019

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.

See More

First Known Use of fiber

1607, in the meaning defined at sense 1

History and Etymology for fiber

Middle French fibre, from Latin fibra

Keep scrolling for more

Keep scrolling for more

More Definitions for fiber

fiber

noun
How to pronounce fiber (audio)

English Language Learners Definition of fiber

: 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

See the full definition for fiber in the English Language Learners Dictionary

fiber

noun
fi·​ber | \ ˈfī-bər How to pronounce fiber (audio) \

Kids Definition of fiber

1 : a thread or a structure or object resembling a thread
2 : plant material that cannot be digested

fiber

noun
fi·​ber
variants: or chiefly British fibre \ ˈfī-​bər How to pronounce fibre (audio) \

Medical Definition of fiber

1 : a thread or a threadlike structure or object: as
a

WORD OF THE DAY

See Definitions and Examples

Get Word of the Day daily email!