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[ri-duhn-duh n-see] /rɪˈdʌn dən si/
noun, plural redundancies.
the state of being redundant.
superfluous repetition or overlapping, especially of words.
a redundant thing, part, or amount; superfluity.
the provision of additional or duplicate systems, equipment, etc., that function in case an operating part or system fails, as in a spacecraft.
  1. the inclusion of more information than is necessary for communication, as in those cars, where both words are marked for plurality.
  2. the additional, predictable information so included.
  3. the degree of predictability thereby created.
Chiefly British.
  1. the condition or fact of being unemployed; unemployment.
  2. a layoff.
Also, redundance.
Origin of redundancy
1595-1605; < Latin redundantia an overflowing, excess, derivative of redundāns redundant; see -ancy
Can be confused
redundancy, tautology. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for redundancies
  • But putting people's health information in databases and online is going to do more than simply reduce redundancies.
  • But the redundancies it created also had tremendous value when things went wrong.
  • XX minimizes the redundancies to deliver basically the same gearing, but in a simpler and lighter package.
  • In the meantime they cannot rule out making redundancies in both businesses.
  • In some cases there are overlapping responsibilities and redundancies.
  • Yet the reminiscences eventually triumph over the redundancies.
  • There are still many inconsistencies, redundancies, bugs and missing parts in the system that make it far from intuitive.
  • But when things go bad, you'll want those redundancies and inefficiencies but you'll give them a different label: robustness.
  • It may seem odd, but the first step along the way is lots of redundancies.
  • Another big round of redundancies is still possible.
British Dictionary definitions for redundancies


noun (pl) -cies
  1. the state or condition of being redundant or superfluous, esp superfluous in one's job
  2. (as modifier): a redundancy payment
excessive proliferation or profusion, esp of superfluity
duplication of components in electronic or mechanical equipment so that operations can continue following failure of a part
repetition of information or inclusion of additional information to reduce errors in telecommunication transmissions and computer processing
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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Word Origin and History for redundancies



c.1600; see redundant + -ancy. Sense in employment is from 1931, chiefly British.

Online Etymology Dictionary, © 2010 Douglas Harper
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redundancies in Culture

redundancy definition

Unnecessary repetition in speech or writing. The expression freedom and liberty is redundant.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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