1. (

• redundancy

) repetition of messages to reduce the probability of errors in transmission ;

2. (

• redundancy ,
• redundance

) the attribute of being superfluous and unneeded; "the use of industrial robots created redundancy among workers" ;

3. (

• redundancy

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

4. (

• redundancy

) repetition of an act needlessly ;