obsolescence
\ob-suh-LES-uhns\
noun
1. the state, process, or condition of being or becoming obsolete.
Quotes
In the case of The Who, as Townshend observes, that meant exploring the genre’s built-in obsolescence. At the start of the group’s career, he notes, everyone believed that pop music was going through phases, none of which would last long.
-- , "Lambert & Stamp: The men who made The Who," BBC, May 15, 2015
Origin
Obsolescence entered English in the 1820s from the Latin obsolēscere meaning "to fall into disuse."
Dictionary.com
