- The definition of a fiber is a thin, threadlike structure that combines to form animal or plant tissue, or a thin, threadlike structure made synthetically or from minerals.
- An example of fiber is what is found in asparagus.
- An example of fiber is a thread in a ball of rayon yarn.
fiber definition by Webster's New World
- a slender, threadlike structure that combines with others to form animal or vegetable tissue
- the tissue so formed: muscle fiber
- a slender, threadlike structure made from a mineral or synthetically: rayon fibers
- any substance that can be separated into threads or threadlike structures for spinning, weaving, etc.: cotton fiber
- any such thread or structure: wool fibers
- a threadlike root
- the texture of something: a fabric of coarse fiber
- character or nature; quality: a man of strong moral fiber
Origin: French fibre ; from Classical Latin fibra, akin to filum, thread: see file
- fiberlike adjective
fiber definition by American Heritage Dictionary
- A slender, elongated, threadlike object or structure.
- Botany One of the elongated, thick-walled cells that give strength and support to plant tissue.
- Anatomy a. Any of the filaments constituting the extracellular matrix of connective tissue.b. Any of various elongated cells or threadlike structures, especially a muscle fiber or a nerve fiber.
- a. A natural or synthetic filament, as of cotton or nylon, capable of being spun into yarn.b. Material made of such filaments.
- a. Something that provides substance or texture.b. Essential character: “stirred the deeper fibers of my nature” (Oscar Wilde).c. Basic strength or toughness; fortitude: lacking in moral fiber.
- Coarse, indigestible plant matter, consisting primarily of polysaccharides such as cellulose, that when eaten stimulates intestinal peristalsis. Also called bulk, roughage.
Origin: French fibre, from Old French, from Latin fibra.
- fiˈbered adjective
fiber - Computer Definition
See optical fiber.
fiber - Medical Definition
- A slender thread or filament.
- Extracellular filamentous structures such as collagenic or elastic connective tissue fibers.
- The nerve cell axon with its glial envelope.
- An elongated threadlike cell, such as a muscle cell or one of the epithelial cells of the lens of the eye.
- Coarse, indigestible plant matter, consisting primarily of polysaccharides such as cellulose, that when eaten stimulates intestinal peristalsis. Also called roughage.
fiber - Science Definition
- The parts of grains, fruits, and vegetables that contain cellulose and are not digested by the body. Fiber helps the intestines absorb water, which increases the bulk of the stool and causes it to move more quickly through the colon.
- One of the elongated, thick-walled cells, often occurring in bundles, that give strength and support to tissue in vascular plants. Fibers are one type of sclerenchyma cell.
- Any of the elongated cells of skeletal or cardiac muscle, made up of slender threadlike structures called myofibrils.
- The axon of a neuron.
- fibrous fibrous adjective