fiber optics

plural noun

1
: thin transparent fibers of glass or plastic that are enclosed by material of a lower refractive index and that transmit light throughout their length by internal reflections
also : a bundle of such fibers used in an instrument (as for viewing body cavities)
2
singular in construction : the technique of the use of fiber optics

Examples of fiber optics in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Internet bandwidth is a lot slower than the fiber optics inside a data center. Tor Constantino, Forbes.com, 2 June 2025 Infrastructure remedies such as runway repairs, system upgrades—including a new radar center in Philadelphia—and the introduction of fiber optics have been announced to lessen dependence on outdated technology. Nick Mordowanec, MSNBC Newsweek, 30 May 2025 While terrestrial fiber optics require no pointing precision, laser optical communications in orbit require ultraprecise steerable telescopes to be able to send beams either to another satellite or, adding in atmospheric complications, to the ground. IEEE Spectrum, 12 May 2025 The eight-page proposal outlines a nationwide reform of the air traffic control system, calling for the replacement of outdated radio communication tools with modern systems, swapping copper cables for high-speed fiber optics, and transitioning flight data management to fully digital platforms. Samantha-Jo Roth, The Washington Examiner, 14 May 2025 See All Example Sentences for fiber optics

Word History

First Known Use

1956, in the meaning defined at sense 1

Time Traveler
The first known use of fiber optics was in 1956

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Cite this Entry

“Fiber optics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fiber%20optics. Accessed 6 Jun. 2025.

Kids Definition

fiber optics

noun
1
plural : thin transparent enclosed fibers of glass or plastic that carry light by internal reflections
also : a bundle of such fibers used in an instrument
2
: the technique of the use of fiber optics

Medical Definition

fiber optics

noun plural
variants or chiefly British fibre optics
1
: thin transparent fibers of glass or plastic that are enclosed by material of a lower index of refraction and that transmit light throughout their length by internal reflections
also : a bundle of such fibers used in an instrument (as an endoscope)
2
singular in construction : the technique of the use of fiber optics
fiber-optic adjective
or chiefly British fibre-optic

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