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[ri-duhn-duh nt] /rɪˈdʌn dənt/
characterized by verbosity or unnecessary repetition in expressing ideas; prolix:
a redundant style.
being in excess; exceeding what is usual or natural:
a redundant part.
having some unusual or extra part or feature.
characterized by superabundance or superfluity:
lush, redundant vegetation.
  1. (of a structural member) not necessary for resisting statically determined stresses.
  2. (of a structure) having members designed to resist other than statically determined stresses; hyperstatic.
  3. noting a complete truss having additional members for resisting eccentric loads.
    Compare complete (def 8), incomplete (def 3).
  4. (of a device, circuit, computer system, etc.) having excess or duplicate parts that can continue to perform in the event of malfunction of some of the parts.
Linguistics. characterized by redundancy; predictable.
Computers. containing more bits or characters than are required, as a parity bit inserted for checking purposes.
Chiefly British. removed or laid off from a job.
Origin of redundant
1595-1605; < Latin redundant- (stem of redundāns), present participle of redundāre to flow back, overflow, be excessive. See redound, -ant
Related forms
redundantly, adverb
1. verbose, repetitive. See wordy. 2. excessive; useless; superfluous, tautologous. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for redundant
Contemporary Examples
Historical Examples
  • The trade to the East Indies, if it were altogether free, would probably absorb the greater part of this redundant capital.

  • Its attributes of youth are the activity and eager life with which it is redundant.

    Sketches from Memory Nathaniel Hawthorne
  • I always used to think that the term "officer and gentleman" was redundant, but now I begin to understand the need for it.

  • And this rosiness, so like redundant vigor, was it not the flush of her hot task?

    Dr. Sevier George W. Cable
  • Mr. Balfour was a tall, lithe man, with not a redundant ounce of flesh on him.

    Sevenoaks J. G. Holland
British Dictionary definitions for redundant


surplus to requirements; unnecessary or superfluous
verbose or tautological
deprived of one's job because it is no longer necessary for efficient operation: he has been made redundant
(of components, information, etc) duplicated or added as a precaution against failure, error, etc
Derived Forms
redundantly, adverb
Word Origin
C17: from Latin redundans overflowing, from redundāre to run back, stream over; see redound
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 redundant

1590s, from Latin redundantem (nominative redundans), present participle of redundare, literally "overflow, pour over; be over-full;" figuratively "be in excess," from re- "again" (see re-) + undare "rise in waves," from unda "a wave" (see water (n.1)). Of persons, in employment situations, from 1928, chiefly British. Related: Redundantly.

Online Etymology Dictionary, © 2010 Douglas Harper
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