fibrous

adjective

fi·​brous ˈfī-brəs 

1

a

: containing, consisting of, or resembling fibers

b

: characterized by fibrosis

c

: capable of being separated into fibers

a fibrous mineral

2

: tough, sinewy

fibrous texture

Synonyms

• stringy

Examples of fibrous in a Sentence

He had surgery to remove fibrous scar tissue in his knee.

thick, fibrous hair that was not easy to comb

Recent Examples on the Web

Additionally, some fibrous foods, such as leafy vegetables and nuts, support liver health, which plays an important role in detoxification, Manaker said. —Kristen Rogers, CNN Money, 26 July 2025

Slightly heavier than some of its competition, the Genesis was able to use that weight to slice through fibrous carrots with low resistance. —Jesse Raub, Bon Appetit Magazine, 3 July 2025

But if it over-ferments, durian tastes rotten, becomes too bitter and transforms into a fibrous, hard-to-eat mess. —Tom Downey, Smithsonian Magazine, 26 June 2025

The Achilles tendon is a fibrous cord that directs movement from the leg to the foot, connecting muscles from the calf to the heel bone. —Steve Henson, Los Angeles Times, 23 June 2025

Word History

Etymology

modification of Middle French fibreux, from fibre fiber

First Known Use

1597, in the meaning defined at sense 1a

Phrases Containing fibrous

• fibrous root

Kids Definition

fibrous

adjective

fi·​brous ˈfī-brəs 

1

: containing, consisting of, or resembling fibers

2

: tough entry 1 sense 1b, stringy

Medical Definition

fibrous

adjective

fi·​brous ˈfī-brəs 

1

: containing, consisting of, or resembling fibers

collagen is a fibrous protein

2

: characterized by fibrosis