: the lens or combination of lenses at the eye end of an optical instrument
Examples of eyepiece in a Sentence
Recent Examples on the Web
For a closer look at craters and the terminator, make sure to grab a 9mm or 12mm eyepiece and get stronger magnification.
—
Anthony Wood, Space.com, 25 May 2026
The French model and singer Yseult—whose body formed the basis of one of several new mannequins in the Costume Institute exhibition—looked like a chic bug in a Harris Reed demi-couture design, which featured a golden bodice the color of a scarab shell and long antennae sprouting from an eyepiece.
—Rachel Syme, New Yorker, 5 May 2026
Stand-alone telescope eyepieces with active light amplification do exist for a real-time viewing, but commercial products are pricey, costing hundreds to thousands of dollars.
—Jordan Blanchard, IEEE Spectrum, 4 Jan. 2026
Beneath the dome, the 57-foot-long Great Refractor telescope is wrapped in black plastic tarps from eyepiece to lens assembly.
—Ethan Baron, Mercury News, 31 Dec. 2025
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Anthony Wood, Space.com, 25 May 2026
The French model and singer Yseult—whose body formed the basis of one of several new mannequins in the Costume Institute exhibition—looked like a chic bug in a Harris Reed demi-couture design, which featured a golden bodice the color of a scarab shell and long antennae sprouting from an eyepiece.
—Rachel Syme, New Yorker, 5 May 2026
Stand-alone telescope eyepieces with active light amplification do exist for a real-time viewing, but commercial products are pricey, costing hundreds to thousands of dollars.
—Jordan Blanchard, IEEE Spectrum, 4 Jan. 2026
Beneath the dome, the 57-foot-long Great Refractor telescope is wrapped in black plastic tarps from eyepiece to lens assembly.
—Ethan Baron, Mercury News, 31 Dec. 2025
See All Example Sentences for eyepiece
Cite this Entry
“Eyepiece.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eyepiece. Accessed 6 Jun. 2026.
Copy CitationKids Definition
eyepiece
noun
eye·piece
ˈī-ˌpēs 
: the lens or combination of lenses at the eye end of an optical instrument (as a microscope or telescope)
Medical Definition
eyepiece
noun
eye·piece
ˈī-ˌpēs
: the lens or combination of lenses at the eye end of an optical instrument
called also ocular
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