1
: a polished or smooth surface (as of glass) that forms images by reflection
She looked at herself in the mirror.
2
a
: something that gives a true representation
… the press as a mirror of public opinion …—
C. G. Bowers
C. G. Bowers
b
: an exemplary model
The building is a mirror of functionality.
mirrored; mirroring; mirrors
1
: to reflect in or as if in a mirror
The clouds were mirrored in the lake.
2
: resemble
His mood mirrored the gloomy weather.
Examples of mirror in a Sentence
Noun
breaking a mirror is supposed to bring seven years of bad luck
Verb
The building was mirrored in the lake.
the still waters of the pond mirroring the cloudless sky above
Recent Examples on the Web
Catherine Salfino, Sourcing Journal, 31 Oct. 2025
These heels are one of the label’s signature styles, offered in a slew of colors and finishes, ranging from grey satin to silver mirror-effect leather.
—Kelsey Stewart, Footwear News, 31 Oct. 2025
Martha McHardy, MSNBC Newsweek, 25 Oct. 2025
The development mirrors the Butler County Sheriff's Offices' increasingly cooperative relationship with ICE.
—Matthew Cupelli, Cincinnati Enquirer, 25 Oct. 2025
See All Example Sentences for mirror
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Noun
PwC’s outlook mirrors the Lifestyle Monitor™ survey, with its forecast predicting a 5 percent drop in average holiday spending.
—Catherine Salfino, Sourcing Journal, 31 Oct. 2025
These heels are one of the label’s signature styles, offered in a slew of colors and finishes, ranging from grey satin to silver mirror-effect leather.
—Kelsey Stewart, Footwear News, 31 Oct. 2025
Verb
Rutgers-Eagleton’s mid-October survey mirrored that trend, finding 42 percent of voters viewed Sherrill favorably and 45 percent unfavorably, while Ciattarelli’s numbers were 41 percent favorable and 47 percent unfavorable.
—Martha McHardy, MSNBC Newsweek, 25 Oct. 2025
The development mirrors the Butler County Sheriff's Offices' increasingly cooperative relationship with ICE.
—Matthew Cupelli, Cincinnati Enquirer, 25 Oct. 2025
See All Example Sentences for mirror
Cite this Entry
“Mirror.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mirror. Accessed 6 Nov. 2025.
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Medical Definition
mirror
noun
mir·ror
ˈmir-ər 
: a polished or smooth surface (as of glass) that forms images by reflection
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