Definition of fiber in US English:

fiber

(British fibre)

noun

  • 1A thread or filament from which a vegetable tissue, mineral substance, or textile is formed.

    ‘tropical elements like coconut fibers and branches’
    • ‘A buff is made from a non-woven fabric where the fibers are first carded and formed into a fairly thick fleece.’
    • ‘The original focus industries were pottery, sericulture, carpentry, textiles, coconut fiber, and woven mats.’
    • ‘Vegetable fibers were used by ancient man for fishing and trapping.’
    • ‘Jute is a vegetable fiber cultivated in China, India, Pakistan, and other south Asia countries.’
    • ‘This superfine cloth comes from our own traditional handlooms woven out of natural fibres like cotton, linen, silk, wool, jute, etc. and soaked in natural dyes.’
    • ‘Felt fabric is a compact sheet of entangled, not woven wool, fur, sometimes cotton fibers.’
    • ‘A rope is a ply of natural threads or synthetic fibers.’
    • ‘Coir is a natural fibre made from coconuts and used for matting, screening, baskets and other products.’
    • ‘Fabric wallpaper are usually made of cotton, linen, or other natural plant fibers, such as grass cloth, hemp, or burlap.’
    • ‘The asbestos fibres got stuck in the hand-knitted socks and jumpers.’
    • ‘Blankets, in the form of batts or rolls, are flexible products made from mineral fibers.’
    • ‘They use acid-free paper made from cotton, which is much more durable than paper made from wood because the cotton fibers are much longer.’
    • ‘It is also the most stain resistant because unlike wool, its fibers do not accept dyes and colors easily.’
    • ‘Because they are composed of vegetable fibers, EcoDragon's sandals can be composted once they're worn out.’
    • ‘The EPCH also plans to include a complete product group of floor coverings made of natural fibres including coir, jute, cotton, silk and wool.’
    • ‘While wool is excellent at hiding dirt, any dirt that does become embedded in the carpet is prone to damage the fibers by abrasion.’
    • ‘With its qualities of strength and texture, and the ability to be dyed in vibrant colours, silk proved an unequalled fibre for textile production.’
    • ‘Until the 19th cent. wool fibres dominated knitting but other textile fibres came into use.’
    • ‘Hot glass fibers for insulation and nylon fibers for textiles are extruded through platinum sieves.’
    • ‘Hats, mats, hammocks, and baskets are made with different types of cane and reed as well as fibers from the maguey cactus.’
    thread, strand, tendril, filament
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    1. 1.1 A substance formed of threads or filaments.
      ‘ordinary synthetics don't breathe as well as natural fibers’
      ‘high strength carbon fiber’
      • ‘Natural fibres such as cotton and wool can usually be washed and worn repeatedly and are always a safe bet, whereas embroidered pieces and handmade garments are treasures and should be treated with respect.’
      • ‘In general, if the ash is soft and the odor is of burning hair or paper, the fabric is a natural fiber.’
      • ‘The thing to keep in mind is that your fabric must be a natural fiber: cotton, rayon, silk, or linen.’
      • ‘Both fabrics wick perspiration away from your skin while natural fibers like cotton and wool tend to get damp and clammy with sweat.’
      • ‘Sweeney prints mainly on silk, but also onto linen, cotton and other natural fibres.’
      • ‘Merino Wool is a natural fiber that absorbs 10 times more moisture than synthetics, and it does not hold odor.’
      • ‘Natural fibres like cotton and wool can usually be washed and worn repeatedly and are always a safe bet.’
      • ‘Opt for cotton, linen and other natural fibers that help absorb moisture and allow your body to breathe.’
      • ‘Natural fibres in cool lightweight fabrics, teamed with slightly shaped shirts to skim the body's contours, will be de rigueur.’
      • ‘Wear clothes that are made from natural fibres like cotton, linen and silk; they allow your skin to breathe.’
      • ‘They work in a variety of disciplines including ceramics, fibres, glass, mirror design, jewellery and photography.’
      • ‘Floral prints in combination with light, natural fibres like chiffon, silk and linen underscore this young and natural look.’
      • ‘The child should wear layered natural fibers and wool socks, weather permitting.’
      • ‘It is possible to dye a natural fiber like pashmina, but there is no guarantee to the outcome, either in color or texture.’
      material, substance, cloth, fabric, stuff
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    2. 1.2 A threadlike structure forming part of the muscular, nervous, connective, or other tissue in the human or animal body.
      ‘there were degenerative changes in muscle fibers’
      figurative ‘she wanted him with every fiber of her being’
      • ‘A motor unit is made up of a single nerve axon and the muscle fibers it supplies.’
      • ‘At early stages of development, single muscle fibers are innervated by axon terminals from several different motor neurons.’
      • ‘The muscle fibers in the mucosal muscular layer are also longitudinal, oriented along the axis of the cylindrical organ.’
      • ‘Muscle biopsies were freed of connective tissue and muscle fibers were isolated.’
      • ‘The skin of D. holocanthus is highly elastic because of microfolds in the epidermis and collagen fibers of the dermis.’
      • ‘Loose connective tissue consists of fibers running in all directions through a semifluid matrix.’
      • ‘My rheumatologist thought I might have torn muscle fibers in the latissimus dorsi and tried an injection of triamcinolone.’
      • ‘Huge masses of them are scattered also between the adjacent striated muscle fibers.’
      • ‘Striated skeletal muscle fibers vary in length between 2 and 25 cm, depending upon the muscle.’
      • ‘Acetylcholine acts as a transmitter between motor nerves and the fibres of skeletal muscle at all neuromuscular junctions.’
      • ‘Most simply, muscle fibers activated by the nervous system produce tensile forces that are transmitted to the skeleton.’
      • ‘Heat alters the fibres of connective tissue, initially by making them shorter and thicker, and then by altering the structure.’
      • ‘Individual muscle fibers may be innervated by one or both of the excitatory neurons, and generally receive inhibitory input as well.’
      • ‘The middle trapezius muscle fibers, although strong, lie very close to the axis of rotation of the scapula.’
      • ‘Usually, leiomyosarcomas originate from the renal capsule, muscle fibers in the renal pelvis, or the walls of renal vessels.’
      • ‘It was defined as the most distal part of the muscle in which tendon fibers could be visualized.’
      • ‘Unlike many body tissues, nerve cells and fibers in the central nervous system cannot regenerate.’
      • ‘Its fibers are found in connective tissue, including skin, bone, ligaments, and cartilage.’
      • ‘The basic functional unit of muscle is the motor unit, which consists of a motoneuron and the muscle fibers that it innervates.’
      • ‘Other structures, such as connective tissue fibers and neuroglia, may be impregnated.’
    3. 1.3 Strength of character.
      ‘a weak person with no moral fiber’
      • ‘This is so because some drugs that are being abused are not only dangerous but pose a very serious threat to life and society's moral fibre.’
      • ‘After all, your elders are of a stronger moral fibre, having been tested in life.’
      • ‘His lack of moral fibre and intellectual courage are two of his shortcomings that infuriate the most.’
      • ‘Medical research into the drug came to an abrupt end in the mid-1960s when LSD hit the headlines as hazardous to health and a looming shadow over society's moral fibre.’
      • ‘The strength has to be in the moral fibre of a people, and that sort of strength enables one to provide moral leadership in the world.’
      • ‘People that live on the streets do not necessarily lack moral fibre.’
      • ‘Only those with inordinate levels of moral fibre can visit the venue during those first couple of weeks in April and return with their former principles intact.’
      • ‘Alarmed by the decline of empire, he determined to instil moral fibre and intrepid ways into lads who, as well as contributing to civic good, might somehow keep the colonial flag flying.’
      • ‘Well I like France, at present they have slightly more moral fibre than the British Government (not a huge challenge, admittedly).’
      • ‘His weak moral fibre, mixed with his genuine desire to help Kathy, does nothing but tear the fabric of both her life and Behrani's.’
      • ‘That moral fibre will defeat the fanaticism of these terrorists and their supporters.’
      • ‘But the logical spin-off of the celebrity chef has been the celebration of cooking, an activity in which new moral fibre is being endlessly invested.’
      • ‘He practices his speech on moral fibre that should land him a scholarship to a prestigious university, while darting envious glances at his partying schoolmates.’
      • ‘‘We [viz fat people] are normally considered to be lazy, slobbish and lacking in moral fibre,’ she declares.’
      • ‘It all makes me feel rather sorry for men: as if being present at the birth has become some sort of test of moral fibre.’
      • ‘Because while we may find a snippet of moral fibre here and detect evidence of it there, somehow it seems to be far less plentiful these days.’
      • ‘We can't be having people of poor moral fibre now, can we.’
      • ‘His flying was initially hampered by a rugby injury and when he reported the injury he was suspected of having a lack of moral fibre.’
      • ‘It is also intended, no doubt, to contrast British efficiency and moral fibre with Spanish and Portuguese fecklessness.’
      • ‘But in the very same essay, Macaulay supposes Bacon the man to be thoroughly deceitful, self-seeking, and lacking in moral fibre.’
      strength of character, resolution, fortitude, resolve, moral fibre, backbone, spine, mettle, firmness of purpose, toughness of spirit, steel
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  • 2Dietary material containing substances such as cellulose, lignin, and pectin, that are resistant to the action of digestive enzymes.

    ‘cereals high in fiber’
    • ‘Actual plant starches contain a certain amount of cellulose, another carbohydrate which is not digested by humans but supplies essential dietary fibre.’
    • ‘In addition, they contain large amounts of soluble fiber, including pectin that helps to lower cholesterol.’
    • ‘They are high in fibre and a substance called pectin, both of which may help to control cholesterol levels in the bloodstream.’
    • ‘Net impact carbs result from replacing wheat flour with soy flour or adding fiber, sugar alcohols or fat.’
    • ‘High consumption of dietary fiber regulates blood sugar levels, reduces cholesterol and can prevent heart disease and cancer.’
    • ‘And a kind of fiber in apples called pectin reduces cholesterol and helps maintain steady blood sugar levels.’
    • ‘Salad leaves are rich in a range of nutrients including fibre, folate and so-called carotenoids such as alphacarotene, lutein and zeaxanthin.’
    • ‘Made out of lentils, beans and spices, these little balls are rich in fibre and protein.’
    • ‘It is what is lacking in our food - the vitamins, minerals, fibre, phytochemicals and micro-nutrients in a plant-based diet - that counts.’
    • ‘Dietary fibre consists of plant material such as cellulose, hemicellulose, pectin, polysaccharides, gums, mucilage and lignin.’
    • ‘The complex carbohydrates and fiber in whole wheat slow the release of blood sugar, providing steady energy.’
    • ‘As pears are dense, they are also a good source of fibre and pectin.’
    • ‘Each recipe is analyzed for calcium but also for calories, protein, fat, carbohydrate, dietary fiber, sodium, and magnesium.’
    • ‘Previous studies have indicated that soybean protein and dietary fiber reduces cholesterol and improves insulin resistance.’
    • ‘Sprouts are an excellent source of digestible protein, fibre, and Vitamin C, and are full of antioxidants.’
    • ‘Dry beans, peas, and lentils offer protein and fiber without the cholesterol and fat that meats have.’
    • ‘It is a rich source of carbohydrates, protein, fiber, amino acids, minerals, sterols, and fatty acids.’
    • ‘Besides soy protein, the yogurts include added fiber and vitamins C and D and are lactose reduced.’
    • ‘Yes, a ruminant couldn't live on roughage without the bugs, because these digest the tough cellulose fibre in the plants the animals eat.’
    • ‘Protein, fat and fiber keep blood sugar levels more even and help keep such cravings under control.’
    roughage, bulk, fibrous material
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Origin

Late Middle English (in the sense ‘lobe of the liver’, (plural) ‘entrails’): via French from Latin fibra ‘fiber, filament, entrails’.

Pronunciation

fiber

/ˈfībər//ˈfaɪbər/