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noun Egyptian Religion.
  1. a goddess of fertility, the sister and wife of Osiris and mother of Horus, and usually represented as a woman with a cow's horns with the solar disk between them: later worshiped in the Greek and Roman empires.
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Origin of Isis

< Latin < Greek Îsis < Egyptian 'st


  1. Islamic State in Iraq and al-Sham (or Islamic State in Iraq and Syria): a radical Sunni Muslim organization whose aim is to restore an Islamic state, or caliphate, in the region encompassing Syria, Lebanon, Israel, Jordan, the Palestinian territories, and southeastern Turkey.
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Origin of ISIS

Arabic al-Sham, an ancient territory known in English as the Levant, an area on the E shores of the Mediterranean
Also called ISIL, IS
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for isis


  1. the local name for the River Thames at Oxford
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  1. an ancient Egyptian fertility goddess, depicted as a woman with a cow's horns, between which was the disc of the sun; wife and sister of Osiris
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012