retro-

from The American Heritage® Dictionary of the English Language, 4th Edition

• Backward; back: retrorocket.
• Situated behind: retrolental.
• Contrary to a usual or natural course or direction: retrograde.

from Wiktionary, Creative Commons Attribution/Share-Alike License

• back or backward
• behind
• in the opposite direction
• in an old-fashioned or old-school way

from the GNU version of the Collaborative International Dictionary of English

• A prefix or combining form signifying backward, back.

from The Century Dictionary and Cyclopedia

• n. A prefix of Latin origin, meaning ‘back’ or ‘backward,’ ‘behind’: equivalent to post-, and the opposite of ante- (also of pre- or pro-) with reference to place or position, rarely to time; sometimes also equivalent to re- and opposed to pre- or pro-. It corresponds to opistho- in words from the Greek.
• Backward.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adj. affecting things past
• n. a fashion reminiscent of the past