Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “fibre”

fibre

noun uk UK (US fiber)   /ˈfaɪ.bər/ us    /-bɚ/

fibre noun (THREAD)

[C] any of the thread-like parts that form plant or artificial material and can be made into cloth: The fibres are woven into fabric. [C or U] threads when they are in a mass that can be used for making products such as cloth and rope: Natural fibres such as cotton tend to be cooler. artificial/man-made/natural fibre [C or U] one of various thread-like structures in the body, such as those found in muscle: muscle fibre(s)

fibre noun (FOOD)

C1 [U] a substance in certain foods, such as fruit, vegetables, and brown bread, that travels through the body as waste and helps the contents of the bowels to pass through the body easily: You should eat more dietary fibre to reduce the risk of bowel cancer.

fibre noun (CHARACTER)

[U] strength of character: He lacked the moral fibre to be leader.
(Definition of fibre from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of fibre?
Browse related topics

You are looking at an entry to do with Complete and whole, but you might be interested in these topics from the Full and empty topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “fibre” in other dictionaries

Word of the Day

debut

the occasion when someone performs or presents something to the public for the first time

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

ped-text verb

November 24, 2014
to text someone while walking I’m ped-texting, I’m looking down at my phone, 75 percent of the time.

Read More