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Definition of optical fibre noun from the Oxford Advanced Learner's Dictionary

optical fibre

noun

/ˌɒptɪkl ˈfaɪbə(r)/

/ˌɑːptɪkl ˈfaɪbər/

(US English optical fiber)

[countable, uncountable]

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a thin glass string through which light can be transmitted (= sent)

See optical fibre in the Oxford Learner's Dictionary of Academic English

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noun

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B2

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