Definition of obsolete adjective from the Oxford Advanced Learner's Dictionary

 

obsolete

 adjective
adjective
BrE BrE//ˈɒbsəliːt//
 
; NAmE NAmE//ˌɑːbsəˈliːt//
 
 
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no longer used because something new has been invented synonym out of date obsolete technology With technological changes many traditional skills have become obsolete. Word Origin late 16th cent.: from Latin obsoletus ‘grown old, worn out’, past participle of obsolescere ‘fall into disuse’.
See the Oxford Advanced American Dictionary entry: obsolete