Learner's definition of REDUNDANT
1 : repeating something else and therefore unnecessary
He edited the paper and removed any redundant information or statements.
Avoid redundant expressions in your writing.
Some people say that since all adages are old, the phrase “old adage” is redundant.
2 technical — used to describe part of a machine, system, etc., that has the same function as another part and that exists so that the entire machine, system, etc., will not fail if the main part fails 3 British : dismissed from a job because you are no longer needed