eyepiece

noun

eye·​piece ˈī-ˌpēs How to pronounce eyepiece (audio)
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
This electric signal is subsequently rendered on a micro display LCD screen, which the user views through the eyepiece. Matt Morris, Space.com, 25 May 2025 The trick for this is to find binoculars with spacious eyepiece adjustments. Bestreviews, Mercury News, 12 May 2025 His first forays into imaging the night sky saw Brecher capture the moon by holding a 'point and shoot' camera up to the eyepiece of his Celestron Ultima 200 Schmidt-Cassegrain telescope. Anthony Wood, Space.com, 25 Apr. 2025 Hold the lens of the smartphone up to the eyepiece of a telescope. Mike Lynch, Twin Cities, 9 Mar. 2025 See All Example Sentences for eyepiece

Word History

First Known Use

1729, in the meaning defined above

Time Traveler
The first known use of eyepiece was in 1729

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Cite this Entry

“Eyepiece.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eyepiece. Accessed 3 Jun. 2025.

Kids Definition

eyepiece

noun
eye·​piece ˈī-ˌpēs How to pronounce eyepiece (audio)
: 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 How to pronounce eyepiece (audio)
: the lens or combination of lenses at the eye end of an optical instrument

called also ocular

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