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retrofit

[verb re-troh-fit, re-troh-fit; noun, adjective re-troh-fit]
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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.
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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.
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noun
  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.
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adjective
  1. being or characterized by a retrofit: retrofit units.
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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

retrofit

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

retrofit

v.

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

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Online Etymology Dictionary, © 2010 Douglas Harper