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[fahy-bruh s] /ˈfaɪ brəs/
containing, consisting of, or resembling fibers.
Origin of fibrous
1620-30; fibr- + -ous
Related forms
fibrously, adverb
fibrousness, noun
interfibrous, adjective
multifibrous, adjective
nonfibrous, adjective
subfibrous, adjective
unfibrous, adjective
unfibrously, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for fibrous
  • It comes off the bone in fibrous strings, as it should, but it is a bit bland.
  • Endurance athletes rely on slow-twitch muscles, fibrous bundles that guzzle oxygen and fatigue slowly.
  • The marrow cells in question cling to narrow fibrous bands inside the bone.
  • The term plantar means the sole of the foot, and fascia refers to any fibrous connective tissue in the body.
  • Muscle tissue is replaced more slowly, and lost muscle tissue may be replaced with a tough fibrous tissue.
  • The outer sac, known as the fibrous pericardium, consists of fibrous tissue.
  • The pharyngeal aponeurosis, or fibrous coat, is situated between the mucous and muscular layers.
  • It resembles the fibrous membrane which connects the cartilaginous rings of the trachea to each other.
  • It also gives off capsular branches, which reach the surface of the organ, ending in its fibrous coat in stellate plexuses.
  • It is a fibrous cord, which is attached to the tip of the styloid process of the temporal and the lesser cornu of the hyoid bone.
British Dictionary definitions for fibrous


consisting of, containing, or resembling fibres: fibrous tissue
Derived Forms
fibrously, adverb
fibrousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for fibrous

1620s, from Modern Latin fibrosus, from Latin fibra (see fiber).

Online Etymology Dictionary, © 2010 Douglas Harper
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fibrous in Medicine

fibrous fi·brous (fī'brəs)
Composed of or characterized by fibroblasts, fibrils, or connective tissue fibers.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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fibrous in Science
  1. 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.

  2. 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.

  3. Any of the elongated cells of skeletal or cardiac muscle, made up of slender threadlike structures called myofibrils.

  4. The axon of a neuron.

fibrous adjective
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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