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

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

Dictionary Entries Near fiber optics

Cite this Entry

“Fiber optics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fiber%20optics. Accessed 23 Jul. 2024.

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

More from Merriam-Webster on fiber optics

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!