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 of fibrous

• 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

To human senses, fibrous seagrass roots running through sediment can be boring. —David George Haskell, Big Think, 27 Mar. 2026

Workers also said ventilation was poor, exposing them to fibrous dust and spray-paint chemicals that made breathing difficult and could harm their health. —Jasmin Malik Chua, Sourcing Journal, 24 Mar. 2026

Judy Wood has Ledderhose disease, a rare and aggressive genetic condition that causes fibrous tumors to grow on the soles of the feet. —Josh Taylor, CBS News, 19 Mar. 2026

When buildings are heavily damaged or collapse, the rubble often contains crushed concrete, gypsum and carcinogenic fibrous materials, such as asbestos. —Armin Sorooshian, The Conversation, 16 Mar. 2026

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