Definition of fiber
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
fiberedplay \ˈfī-bərd\ 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.
Recent Examples of fiber from the Web
Nutritional analysis per 1/2-cup serving: 333 calories, 26 grams fat, 22 grams carbohydrates, 4 grams protein, 194 milligrams cholesterol, 64 milligrams sodium, trace dietary fiber, 69 percent of calories from fat.
Per float: 232 calories (34 percent from fat), 7 grams total fat (5 grams saturated), 29 milligrams cholesterol, 30 grams carbohydrates, 2 grams protein, 84 milligrams sodium, no dietary fiber.
Middlebury’s postmodern mob resonated with every anti-intellectual fiber among the Trumpians.
Every fiber in every muscle was firing for one unified purpose: to sync our oars and pull the boat across the water.
Initially, the committee had planned to cut $1.6 million from the project, which seeks to add roughly 96 miles of fiber optic cabling including a 6.6 mile a stretch of along West Broadway.
Councilman Kevin Kramer, vice chairman of the budget committee, said the Fischer administration had greatly overestimated the cost of installing fiber optic lines.
For comparison, the fiber optic method for quantum teleportation couldn't get a New York photon much farther than Trenton, New Jersey.
A race that can not hold its fiber strong and true deserves to suffer extinction through race suicide.
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
First Known Use: 1540See Words from the same year
FIBER Defined for English Language Learners
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
Definition of fiber for Students
1 : a thread or a structure or object resembling a thread
2 : plant material that cannot be digested
Medical Definition of fiber
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: mostly indigestible material in food that stimulates the intestine to peristalsis—called also bulk, dietary fiber, roughage
Seen and Heard
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