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n. - An Egyptian polymath (born in Iraq) whose research in geometry and optics was influential into the 17th century.

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Usage examples (16)
  • Ibn al-Haytham, in Latin Alhazen, who lived ca. 354
  • I enjoyed your reference to Ibn al-Haytham in your essay.
  • Or Ibn al-Haytham, the 11th-century physicist from Cairo who made pioneering advances in optics.
  • If your readers would like to know more about him, I would like to recommend my new book, Ibn al-Haytham: First Scientist.
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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.