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

Eating more protein and pairing it with fibrous foods, such as certain vegetables, potatoes, and grains, can slow digestion.6 Age: Age can also affect how fast your body breaks down protein. —Mark Gurarie, Verywell Health, 18 Aug. 2025

Denim that is no longer in use is sent to a recycling facility where the hardware is removed and fabric is shredded into a fibrous state. —Angela Velasquez, Sourcing Journal, 6 Aug. 2025

The outermost layer of skin, known as the epidermis, is made up of a fibrous protein called keratin, which is produced by skin cells called keratinocytes, Dr. Gohara explains. —Victoria Moorhouse, Allure, 30 July 2025

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

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