ret·ro·spec·tive 
(rĕt′rə-spĕktĭv)
(rĕt′rə-spĕktĭv)adj.
1. Looking back on, contemplating, or directed to the past.
2. Looking or directed backward.
3. Applying to or influencing the past; retroactive.
4. Of, relating to, or being a retrospective: a retrospective art exhibition.
n.
An exhibition or performance of works produced by an artist over a considerable period.
ret′ro·spective·ly adv.