optical fiber
noun
a very thin, flexible glass or plastic strand along which large quantities of information can be transmitted in the form of light pulses: used in telecommunications, medicine, and other fields.
Compare fiber optics, waveguide.
Origin of optical fiber
First recorded in 1960–65
Also called light guide.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
optical fiber
The American Heritage® Science Dictionary
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