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retro-

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retro-

a prefix occurring in loanwords from Latin meaning “backward” (retrogress); on this model, used in the formation of compound words (retrorocket).

Origin:
< L, repr. retrō (adv.), backward, back, behind
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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retro-  
pref.  
  1. Backward; back: retrorocket.

  2. Situated behind: retrolental.

  3. Contrary to a usual or natural course or direction: retrograde.


[Latin retrō-, from retrō, backward, behind; see re- in Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

retro- pref.

  1. Backward; back: retroposition.

  2. Situated behind: retroperitoneum.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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