Definition of "redundant" in English

adjective

1. Superfluous; exceeding what is necessary, no longer needed.

2. (of words, writing, etc) Repetitive or needlessly wordy.

3. (chiefly British, Ireland, New Zealand, Australia) Dismissed from employment because no longer needed.

   • Four employees were made redundant.

4. Duplicating or able to duplicate the function of another component of a system, providing backup in the event the other component fails.

5. (networking, of topology) Containing duplicate pathways to send a message.