redundant

[ri-duhn-duhnt]
adjective
1.
characterized by verbosity or unnecessary repetition in expressing ideas; prolix: a redundant style.
2.
being in excess; exceeding what is usual or natural: a redundant part.
3.
having some unusual or extra part or feature.
4.
characterized by superabundance or superfluity: lush, redundant vegetation.
5.
Engineering.
a.
(of a structural member) not necessary for resisting statically determined stresses.
b.
(of a structure) having members designed to resist other than statically determined stresses; hyperstatic.
c.
noting a complete truss having additional members for resisting eccentric loads. Compare complete ( def 8 ), incomplete ( def 3 ).
d.
(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.
6.
Linguistics. characterized by redundancy; predictable.
7.
Computers. containing more bits or characters than are required, as a parity bit inserted for checking purposes.
8.
Chiefly British. removed or laid off from a job.

Origin:
1595–1605; < Latin redundant- (stem of redundāns), present participle of redundāre to flow back, overflow, be excessive. See redound, -ant

redundantly, adverb


1. verbose, repetitive. See wordy. 2. excessive; useless; superfluous, tautologous.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
redundant (rɪˈdʌndənt)
 
adj
1.  surplus to requirements; unnecessary or superfluous
2.  verbose or tautological
3.  deprived of one's job because it is no longer necessary for efficient operation: he has been made redundant
4.  (of components, information, etc) duplicated or added as a precaution against failure, error, etc
 
[C17: from Latin redundans overflowing, from redundāre to run back, stream over; see redound]
 
re'dundantly
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

redundant
1594, from L. redundantem (nom. redundans), prp. of redundare "come back, contribute," lit. "overflow," from re- "again" + undare "rise in waves," from unda "a wave" (see water).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Hence it is as common a thing to hear our orators condemned for being too
  jejune and feeble as too excessive and redundant.
Nearly half a million others, it turns out, are redundant.
Modern jet airplanes are designed with highly redundant systems, which make
  accidents highly improbable.
It's strange to see the infrastructure become redundant and halted.
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