the state of being not or no longer needed or useful:the redundancy of 19th-century heavy plant machinery
the use of words or data that could be omitted without loss of meaning or function; repetition or superfluity of information.
Engineering the inclusion of extra components that are not strictly necessary to functioning, in case of failure in other components:a high degree of redundancy is built into the machinery installation
chiefly British the state of being no longer employed because there is no more work available:the factory’s workers face redundancy
