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
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The devices usually had three eyepieces so that the clerk, customer, and a third curious onlooker (parent, spouse, sibling) could all view the image simultaneously. IEEE Spectrum, 30 Oct. 2020 That’s not the case for a monocular, which merely requires one eyepiece to be focused. Jamie Carter, Space.com, 20 Jan. 2025 The erect image is then transmitted to the eyepiece lens, where it is magnified for viewing. Matt Morris, Space.com, 16 Jan. 2025 This will allow enough light to reach the eyepiece. Matt Morris, Space.com, 27 Dec. 2024 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 1 Mar. 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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