redundancy

Use the noun redundancy to refer to something that's needlessly repeated. As much as you hate the redundancy of math drills, you have to admit that repetition is how you learned to multiply in the first place.

The noun redundancy can also refer to something that is unneeded, or extra. If you own a circus and you want to keep costs down by eliminating redundancy, you may decide you only need two clowns, rather than the whole carload of clowns you planned on. Redundancy comes from the Latin word redundare, meaning to surge, or literally to overflow.

Primary Meanings of redundancy

1.
n
the attribute of being superfluous and unneeded
2.
n
repetition of messages to reduce the probability of errors in transmission
Full Definitions of redundancy
1

n the attribute of being superfluous and unneeded

“the use of industrial robots created redundancy among workers”
Synonyms:
redundance
Types:
deadwood, fifth wheel
someone or something that is unwanted and unneeded
Type of:
embarrassment, overplus, plethora, superfluity
extreme excess

n repetition of an act needlessly

Type of:
repeating, repetition
the act of doing or performing again
2

n repetition of messages to reduce the probability of errors in transmission

Type of:
repetitiousness, repetitiveness
verboseness resulting from excessive repetitions

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

Type of:
configuration, constellation
an arrangement of parts or elements

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