Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

optical fibre

noun [C]
 
 

Definition

a long, thin glass rod through which very large amounts of information can be sent in the form of light → See also fibre opticsCommunications technology - general words
(Definition of optical fibre noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“optical fibre” in other dictionaries

Word of the Day

be under a cloud

to not be trusted or popular because people think you have done something bad

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More