DEF: unnecessary because it is more than is needed.
EX:
The text has too many redundant details, many points are repetitive or unnecessary.
The two schools merged and many teachers were made redundant.
Redundant systems are necessary in machines that must not fail, such as space rockets.
Merriam-Webster Online Dictionary
redundant (adjective)1.
a) what is necessary or normal - exceeding superfluous
b) characterized by or containing an - excess , specifically using more words than necessary
c) characterized by similarity or repetition - a group of particularly redundant brick buildings
d) chiefly British no longer needed for a job and hence laid off
2.
- profuse lavish
3.
serving as a duplicate for preventing failure of an entire system (as a spacecraft) upon failure of a single - component
