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n. - Combination of lenses at the viewing end of optical instruments.

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Usage examples (35)
  • The eyepiece is a lens I had lying around, which has a focal length of about 30mm.
  • Bent to the eyepiece was an old woman with long, black hair, wet as a well-used mop.
  • And he looks, and he has his hand up to the eyepiece.
  • He peered briefly into the eyepiece, then straightened.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.