reflector
noun
re·flec·tor
ri-ˈflek-tər 
1
: one that reflects
especially
: a polished surface for reflecting light or other radiation
2
: a telescope in which the principal focusing element is a mirror
Examples of reflector in a Sentence
safety devices such as bicycle reflectors
Reflectors are placed along the lanes of the highway.
Recent Examples on the Web
There are also safety features, like a flag for biking and reflectors.
—
The Editors, Outside, 31 Dec. 2025
The observatory’s Main Building, which houses the Great Refractor dome, the smaller Nickel reflector dome and an exhibit and lecture space between them, has been red-tagged by the county as temporarily unusable.
—Ethan Baron, Mercury News, 31 Dec. 2025
The optical reflector selectively redirects invisible near-infrared light toward the solar cells while allowing most visible light to pass through.
—Georgina Jedikovska, Interesting Engineering, 30 Dec. 2025
Hanks’ entire body — including his face — was covered in up to 150 reflectors to capture all his movements, which were then mapped on to the characters that existed in the film.
—Victoria Edel, PEOPLE, 25 Dec. 2025
See All Example Sentences for reflector
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The Editors, Outside, 31 Dec. 2025
The observatory’s Main Building, which houses the Great Refractor dome, the smaller Nickel reflector dome and an exhibit and lecture space between them, has been red-tagged by the county as temporarily unusable.
—Ethan Baron, Mercury News, 31 Dec. 2025
The optical reflector selectively redirects invisible near-infrared light toward the solar cells while allowing most visible light to pass through.
—Georgina Jedikovska, Interesting Engineering, 30 Dec. 2025
Hanks’ entire body — including his face — was covered in up to 150 reflectors to capture all his movements, which were then mapped on to the characters that existed in the film.
—Victoria Edel, PEOPLE, 25 Dec. 2025
See All Example Sentences for reflector
Cite this Entry
“Reflector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reflector. Accessed 4 Jan. 2026.
Copy CitationKids Definition
reflector
noun
re·flec·tor
ri-ˈflek-tər
1
: one that reflects
especially
: a polished surface for reflecting light or heat
2
: a telescope in which the principal light-gathering element is a mirror
Medical Definition
reflector
noun
re·flec·tor
ri-ˈflek-tər
: one that reflects
especially
: a polished surface for reflecting light or other radiation
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