adj. 1 superfluous; not needed. 2 that can be omitted without any loss of significance. 3 (of a person) no longer needed at work and therefore unemployed. 4 Engin. & Computing (of a component) not needed but included in case of failure in another component. redundancy n. (pl. -ies). redundantly adv.
[ L redundare redundant- (as REDOUND) ]