The definition of obsolete is something that is no longer being used or is out of date.(adjective)
See obsolete in Webster's New World College Dictionary
Origin: L obsoletus, pp. of obsolescere, to go out of use < ob- (see ob-) + *-solescere (< exolescere, to grow out of use < ex-, ex- + ? alescere, to increase: see adolescent)
See obsolete in American Heritage Dictionary 4
Origin: Latin obsolētus
Origin: , past participle of obsolēscere, to fall into disuse; see obsolescent.
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