retrofit

[re-troh-fit, re-troh-fit, re-troh-fit]

verb (used with object)

retrofitted, retrofit, retrofitting. 

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.

verb (used without object)

retrofitted, retrofit, retrofitting. 

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.

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.

adjective

1. being or characterized by a retrofit.

   retrofit units.

retrofit

/ ˈrɛtrəʊˌfɪt /

verb

1. (tr) to equip (a vehicle, piece of equipment, etc) with new parts, safety devices, etc, after manufacture

Other Word Forms

• retrofittable adjective

Word History and Origins

Origin of retrofit¹

retro- + fit ¹

Example Sentences

A report from the community development research nonprofit Headwaters Economics found a complete home retrofit using affordable materials costs between $23,000 and $40,000.

Read more on Los Angeles Times

"But it requires retrofitting. We will need processes outside this system to help complement what we have done so far."

Read more on BBC

Airbus had been line-fitting the change since late 2022 with plans to make it available for retrofit on existing aircraft delayed by steel shortages after Russia’s invasion of Ukraine.

Read more on The Wall Street Journal

Boston Borough Council said its home energy advice and retrofit team will holding a Beat your Winter Worries clinic at Centenary Methodist Church.

Read more on BBC

For years, Toyota held out against electric vehicles while rivals retrofitted factories and launched models in preparation for an all-electric future.

Read more on The Wall Street Journal