[ re-troh ]
/ ˈrɛ troʊ /

adjective Informal.

retroactive: retro pay.
of or designating the style of an earlier time: retro clothes.

Nearby words

  1. retributivism,
  2. retrievable,
  3. retrieval,
  4. retrieve,
  5. retriever,
  6. retro-,
  7. retro-operative,
  8. retroact,
  9. retroaction,
  10. retroactive

Origin of retro

by shortening


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

Origin of retro-

< Latin, representing retrō (adv.), backward, back, behind Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for retro

British Dictionary definitions for retro


/ (ˈrɛtrəʊ) /

noun plural -ros

short for retrorocket


denoting something associated with or revived from the pastretro dressing; retro fashion



back or backwardsretroactive
located behindretrolental

Word Origin for retro-

from Latin retrō behind, backwards

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for retro
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for retro



Backward; back:retroposition.
Situated behind:retroperitoneum.

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