Dictionary
obsolescence
noun ob·so·les·cence \-ˈle-sən(t)s\
: the condition of no longer being used or useful : the condition of being obsolete
Full Definition of OBSOLESCENCE
: the process of becoming obsolete or the condition of being nearly obsolete <the gradual obsolescence of machinery> <reduced to obsolescence>
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First Known Use of OBSOLESCENCE
circa 1828
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