re·dun·dant 
(rĭ-dŭndənt)
(rĭ-dŭndənt)adj.
1. Exceeding what is necessary or natural; superfluous.
2. Needlessly wordy or repetitive in expression: a student paper filled with redundant phrases.
3. Of or relating to linguistic redundancy.
4. Chiefly British Dismissed or laid off from work, as for being no longer needed.
5. Electronics Of or involving redundancy in electronic equipment.
6. Of or involving redundancy in the transmission of messages.
7. Genetics
a. Made up of identical repeating nucleotide sequences that do not code for genes. Used of DNA.
b. Relating to or being a gene that has multiple codons for the same amino acid.
[Latin redundāns, redundant-, present participle of redundāre, to overflow : re-, red-, re- + undāre, to surge (from unda, wave; see wed-1 in the Appendix of Indo-European roots).]
re·dundant·ly adv.