retro

from WordNet (r) 3.0 (2006)

retro
    adj 1: affecting things past; "retroactive tax increase"; "an
           ex-post-facto law"; "retro pay" [syn: {ex post facto},
           {retroactive}, {retro}]
    n 1: a fashion reminiscent of the past

from The Collaborative International Dictionary of English v.0.48

Retro- \Retro-\ [L. retro, adv., backward, back. Cf. {Re}-.]
   A prefix or combining form signifying backward, back; as,
   retroact, to act backward; retrospect, a looking back.
   [1913 Webster]

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