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British. Royal Navy. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for Rn
Contemporary Examples
Historical Examples
  • Tod says that almost all the princes of Rjastn followed the Rn at Kanw.

    The Bbur-nma in English

    Babur, Emperor of Hindustan
  • Rn Ronsard accepted it with a slight but not over-obsequious salutation.

    Temporal Power Marie Corelli
  • He has spoken often to our people, and he is father Rn's friend.

    Temporal Power Marie Corelli
  • She was daughter to Rn, who was a relation of the King of France.

  • Rn preceded her, and in a few minutes they stood in the perfumer's shop.

    Marguerite de Valois Alexandre Dumas
  • On his retuRn Rn's first care was to count his boxes of opiates.

    Marguerite de Valois Alexandre Dumas
  • A moment later Rn appeared, and took in the whole room at a glance.

    Marguerite de Valois Alexandre Dumas
  • Rn's face assumed a dreamy expression which did not escape Henry.

    Marguerite de Valois Alexandre Dumas
  • You admit, then, that you were at Rn's with Monsieur de la Mole?

    Marguerite de Valois Alexandre Dumas
British Dictionary definitions for Rn


Chemical symbol


(in Canada) Registered Nurse
Royal Navy
Niger (international car registration)
Word Origin
(sense 3) From R(epublic of) N(iger)
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
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Rn in Medicine

The symbol for the element radon.

RN or R.N.
registered nurse

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Rn in Science
The symbol for radon.
Symbol Rn
A colorless, odorless, radioactive element in the noble gas group. It is produced by the radioactive decay of radium and occurs in minute amounts in soil, rocks, and the air near the ground. Radon is used as a source of radiation for the treatment of cancer and other diseases. Its most stable isotope is Rn 222 with a half-life of 3.82 days. Atomic number 86; melting point -71°C; boiling point -61.8°C; specific gravity (solid) 4. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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