• synonyms

R, r

noun, plural R's or Rs, r's or rs.
  1. the 18th letter of the English alphabet, a consonant.
  2. any spoken sound represented by the letter R or r, as in ran, carrot, or rhyme.
  3. something having the shape of R.
  4. a written or printed representation of the letter R or r.
  5. a device, as a printer's type, for reproducing the letter R or r.
  6. three R's.
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  1. reis.
  2. rupees.
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  1. right side.
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  1. Recording Secretary.
  2. Reformed Spelling.
  3. Revised Statutes.
  4. Royal Society.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for rs

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Historical Examples

British Dictionary definitions for rs


the internet domain name for
  1. Serbia
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symbol for
  1. rupees
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abbreviation for (in Britain)
  1. Royal Society
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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

rs in Science


  1. Abbreviation of radius
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  1. The symbol for resistance.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.