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E.R.1

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  1. King Edward.
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Origin of E.R.1

From the New Latin word Edwardus Rex

E.R.2

  1. Queen Elizabeth.
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Origin of E.R.2

From the New Latin word Elizabeth Regina

E.R.3

  1. East Riding (Yorkshire).
  2. East River (New York City).
  3. emergency room.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018