fiber

noun

fi·ber | \ ˈfī-bər

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

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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.

Recent Examples on the Web

One cup provides 100 calories, 9 grams of healthful fat, 4 grams of plant protein, and just 4 grams of carb with 2 from fiber, along with 6% of your daily calcium needs and 4% for iron. — Cynthia Sass, Mph, Health.com, "5 Trader Joe's New Products to Try This Fall," 17 Sep. 2019 Other possibilities, the hospital said, include constriction ring syndrome -- when fibers from the amniotic sac wrap themselves around a fetus, causing deformities -- or the umbilical cord becoming wrapped around a fetus' limbs. — Matthew Robinson, CNN, "Babies born with deformed hands spark investigation in Germany," 16 Sep. 2019 The company has a few designs to allow custom facades, including a fiber cement surface that can be painted to match the main house. — Louis Hansen, The Mercury News, "A streamlined future for the pre-fab granny flat," 12 Sep. 2019 During their formative years, Joe made sure that their moral fibers were enriched by both Archie Bunker and Benny Hill. — courant.com, "Joseph Heller," 12 Sep. 2019 Well, there were a few leisure suits, but they were draped on the bodies of men with disappointingly strong moral fiber. — David Harsanyi, National Review, "Criminal Charisma," 12 Sep. 2019 The instrument has 5000 fibers attached to its 0.8-meter-wide focal plane. — Daniel Clery, Science | AAAS, "Robot detector to map cosmos for clues to dark energy," 11 Sep. 2019 During their formative years, Joe made sure that their moral fibers were enriched by both Archie Bunker and Benny Hill. — Joelle Goldstein, PEOPLE.com, "82-Year-Old Prankster Dies and His Family Gives Him a Hilarious Obituary to Send Him Off," 11 Sep. 2019 Originally a Korean beauty trend, sheet masks have made their way to the US, where fans (including a celeb cult following) love the way the wet paper face masks, often made of bamboo, fiber or cotton, deliver soothing ingredients to the skin. — Nikhita Mahtani, CNN Underscored, "10 top-rated sheet masks you can buy on Amazon right now," 11 Sep. 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.