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WordNet 3.0Copyright Princeton University
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n. - A projector for images for both transparent and opaque objects.

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Usage examples (2)
  • He telegraphed to Mummy to come up to London and bring him up his epidiascope and slides, and he rigged it all up in the ship and started giving lectures to the crew.
  • Not that long ago, a classroom-style overhead projector (properly called an epidiascope) with A4 transparencies and a marker pen was the norm for most conferences.
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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.