• synonyms


[verb re-troh-fit, re-troh-fit; noun, adjective re-troh-fit]
verb (used with object), ret·ro·fit·ted or ret·ro·fit, ret·ro·fit·ting.
  1. to modify equipment (in airplanes, automobiles, a factory, etc.) that is already in service using parts developed or made available after the time of original manufacture.
  2. to install, fit, or adapt (a device or system) for use with something older: to retrofit solar heating to a poorly insulated house.
Show More
verb (used without object), ret·ro·fit·ted or ret·ro·fit, ret·ro·fit·ting.
  1. (of new or modified parts, equipment, etc.) to fit into or onto existing equipment.
  2. to replace existing parts, equipment, etc., with updated parts or systems.
Show More
  1. something that has been retrofitted.
  2. an instance of updating, enlarging, etc., with new or modified equipment: A retrofit could save thousands of dollars.
Show More
  1. being or characterized by a retrofit: retrofit units.
Show More

Origin of retrofit

Related formsret·ro·fit·ta·ble, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for retrofittable


verb -fits, -fitting or -fitted
  1. (tr) to equip (a vehicle, piece of equipment, etc) with new parts, safety devices, etc, after manufacture
Show More
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 retrofittable



1954, from retro- + fit (v.). Related: Retrofitted; retrofitting. As a noun, 1956, from the verb.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper