: 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
With a telescope use an eyepiece that provides you with at least 50-power.
—
Joe Rao, Space.com, 8 Oct. 2025
What Lowell probably saw was a projection of his own retina’s blood vessels onto the eyepiece of his telescope.
—David Kamp, Air Mail, 23 Aug. 2025
But there's something special about bringing a camera to your eye and seeing a crisp, bright view of the world in the eyepiece.
—PC Magazine, 23 July 2025
That’ll have a much wider aperture than a high-magnification eyepiece.
—Mike Lynch, Twin Cities, 6 July 2025
See All Example Sentences for eyepiece
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Joe Rao, Space.com, 8 Oct. 2025
What Lowell probably saw was a projection of his own retina’s blood vessels onto the eyepiece of his telescope.
—David Kamp, Air Mail, 23 Aug. 2025
But there's something special about bringing a camera to your eye and seeing a crisp, bright view of the world in the eyepiece.
—PC Magazine, 23 July 2025
That’ll have a much wider aperture than a high-magnification eyepiece.
—Mike Lynch, Twin Cities, 6 July 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 16 Oct. 2025.
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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