Definition of retro
(Entry 1 of 2)
: relating to, reviving, or being the styles and especially the fashions of the past : fashionably nostalgic or old-fashioned
a retro look
retro-
prefixDefinition of retro- (Entry 2 of 2)
1
: backward : back
retro-rocket
2
: situated behind
retroperitoneal
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Merriam-Webster unabridged
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Time Traveler for retro
The first known use of retro was in 1972
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