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[fahy-bruh s] /ˈfaɪ brəs/
containing, consisting of, or resembling fibers.
Origin of fibrous
First recorded in 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. 2018.
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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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