What does redundancy mean?

Definitions for redundancy
rɪˈdʌn dən sire·dun·dan·cy

This dictionary definitions page includes all the possible meanings, example usage and translations of the word redundancy.

Princeton's WordNet

  1. redundancynoun

    repetition of messages to reduce the probability of errors in transmission

  2. redundancy, redundancenoun

    the attribute of being superfluous and unneeded

    "the use of industrial robots created redundancy among workers"

  3. redundancynoun

    (electronics) a system design that duplicates components to provide alternatives in case one component fails

  4. redundancynoun

    repetition of an act needlessly


  1. redundancynoun

    The state of being redundant; a superfluity; something redundant or excessive; a needless repetition in language; excessive wordiness.

  2. redundancynoun

    Duplication of components or circuits to provide survival of the total system in case of failure of single components.

  3. redundancynoun

    Duplication of parts of a message to guard against transmission errors.

  4. redundancynoun

    The state of being unemployed because one's job is no longer necessary; the dismissal of such an employee; a layoff.

  5. redundancynoun

    surplusage inserted in a pleading which may be rejected by the court without impairing the validity of what remains.

Samuel Johnson's Dictionary

  1. Redundance, Redundancynoun

    Superfluity; superabundance.

    Etymology: redundantia, Lat. from redundant.

    The cause of generation seemeth to be fulness; for generation is from redundancy: this fulness ariseth from the nature of the creature, if it be hot, and moist and sanguine; or from plenty of food. Francis Bacon.

    It is a quality, that confines a man wholly within himself, leaving him void of that principle, which alone should dispose him to communicate and impart those redundancies of good, that he is possessed of. South.

    I shall show our poets redundance of wit, justness of comparisons, and elegance of descriptions. Samuel Garth.

    Labour ferments the humours, casts them into their proper channels, and throws off redundancies. Addison.


  1. redundancy

    Redundancy is the duplication or repetition of functions, systems, or tasks to increase reliability and improve performance, often as a backup or safety measure. It can also refer to superfluous repetition or overlapping in work, language, or data, sometimes resulting in unnecessary or inefficient usage of resources.

Webster Dictionary

  1. Redundancynoun

    the quality or state of being redundant; superfluity; superabundance; excess

  2. Redundancynoun

    that which is redundant or in excess; anything superfluous or superabundant

  3. Redundancynoun

    surplusage inserted in a pleading which may be rejected by the court without impairing the validity of what remains

  4. Etymology: [L. redundantia: cf. F. redondance.]


  1. Redundancy

    In engineering, redundancy is the duplication of critical components or functions of a system with the intention of increasing reliability of the system, usually in the case of a backup or fail-safe. In many safety-critical systems, such as fly-by-wire and hydraulic systems in aircraft, some parts of the control system may be triplicated, which is formally termed triple modular redundancy. An error in one component may then be out-voted by the other two. In a triply redundant system, the system has three sub components, all three of which must fail before the system fails. Since each one rarely fails, and the sub components are expected to fail independently, the probability of all three failing is calculated to be extraordinarily small; often outweighed by other risk factors, e.g., human error. Redundancy may also be known by the terms "majority voting systems" or "voting logic".

British National Corpus

  1. Written Corpus Frequency

    Rank popularity for the word 'redundancy' in Written Corpus Frequency: #4049

  2. Nouns Frequency

    Rank popularity for the word 'redundancy' in Nouns Frequency: #2040

How to pronounce redundancy?

How to say redundancy in sign language?


  1. Chaldean Numerology

    The numerical value of redundancy in Chaldean Numerology is: 9

  2. Pythagorean Numerology

    The numerical value of redundancy in Pythagorean Numerology is: 1

Examples of redundancy in a Sentence

  1. Larry Broderick:

    It may very well be that the ask for some of these members may be difficult and voluntary redundancy may have to be considered.

  2. Rebecca Thornley-Gibson:

    The GMB as the recognized union will need to be consulted with in respect of employment matters where collective consultation is required such as mass redundancy proposals.

  3. Ayham Kamel:

    Any oil production disruption would occur at a time when Saudi Arabia has lost a significant part of its energy system redundancies (spare capacity), while Saudi oil production is now close to 9.9 million bpd, it is not clear that the capacity is fully operational at 11.3 million bpd and the (attacked) Abqaiq facility has lost a significant part of its redundancy.

  4. Economy Minister Emmanuel Macron:

    We take note that the Constitutional Council confirms the cap on redundancy payments is in the public interest.

  5. Doug Barry:

    Diversification and some redundancy in supply chains will make sense given the level of risk that the pandemic has uncovered.

Popularity rank by frequency of use


Translations for redundancy

From our Multilingual Translation Dictionary

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"redundancy." Definitions.net. STANDS4 LLC, 2024. Web. 20 Apr. 2024. <https://www.definitions.net/definition/redundancy>.

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    a widespread outbreak of an infectious disease
    A appellative
    B extroversive
    C epidemic
    D occlusive

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