Main Entry: 1ob·so·lete
Pronunciation: \ˌäb-sə-ˈlēt, ˈäb-sə-ˌ\
Function: adjective
Etymology: Latin obsoletus, from past participle of obsolescere to grow old, become disused, perhaps from ob- toward + solēre to be accustomed
Date: 1579

1 a : no longer in use or no longer useful b : of a kind or style no longer current : old-fashioned
2 of a plant or animal part : indistinct or imperfect as compared with a corresponding part in related organisms : vestigial