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

When enjoying an orange, many people remove the white, fibrous layer called the pith, often because of its bitter taste, texture, or simply for appearance. —Jillian Kubala, Health, 11 Mar. 2026

Nutsedge plants produce an extensive underground network of basal bulbs, roots, and thin fibrous rhizomes, which are often left behind when hand-pulling. —Kim Toscano, Southern Living, 8 Mar. 2026

Its red stems can be used to make cordage due to its fibrous bark. —Carl R. Gold, Baltimore Sun, 7 Mar. 2026

Use a sharp chef’s knife to cut and discard the fibrous ends. —Riley Wofford, Martha Stewart, 5 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