[ob.so.lete] adj [L obsoletus, fr. pp. of obsolescere to grow old, become disused, perh. fr. ob- toward + solere to be accustomed] (1579) 1 a: no longer in use or no longer useful b: of a kind or style no longer current: old-fashioned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 syn see old -- ob.so.lete.ly adv -- ob.so.lete.ness n
[2]obsolete vt -let.ed ; -let.ing (1640): to make obsolete