ret·​ro·​re·​flec·​tor ˌre-trō-ri-ˈflek-tər How to pronounce retroreflector (audio)
: a device that reflects radiation (such as light) so that the paths of the reflected rays are parallel to those of the incident rays

Examples of retroreflector in a Sentence

Recent Examples on the Web But now researchers from the International Centre for Radio Astronomy Research, in Western Australia, have developed a coherent FSO link operating at 1,550 nanometers across a turbulent atmosphere between an optical ground terminal and a retroreflector mounted on an airborne drone. IEEE Spectrum, 1 Dec. 2022 Instead, a retroreflector directs the light back towards the source. Rhett Allain, Wired, 12 Sep. 2021 Its glittering ‘eyes’ were the glass retroreflector beads destined to snoop on unsuspecting targets. David Hambling, Popular Mechanics, 18 Feb. 2020 In practice, these retroreflectors acted as a remote microphone to eavesdrop on any conversation. David Hambling, Popular Mechanics, 18 Feb. 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'retroreflector.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1946, in the meaning defined above

Time Traveler
The first known use of retroreflector was in 1946

Dictionary Entries Near retroreflector

Cite this Entry

“Retroreflector.” Dictionary, Merriam-Webster, Accessed 8 Dec. 2023.

Last Updated: - Updated example sentences
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