broad term that applies to any change after the original purchase, such as adding equipment not a part of the original purchase. As applied to alternative fuel vehicles, it refers to conversion device [..]

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

An umbrella term that refers to the modification of something for more efficiency. In the case of water conservation, retrofit refers to modifications to plumbing fixtures to increase efficiency.

To adapt an older library facility to accommodate improvements, for example, in handicapped access. Retrofitting for information technology upgrades may involve not only installation of new equipment [..]

To correct substantive deficiencies in the prior PHA, and then update and revalidate it (See Update and Revalidate).

To weatherize an existing structure. Also, the process of modifying an electric generating plant after it is built to improve its performance.

To remodel the refrigerant system to improve the performance, i.e. fit new refrigerant gas, add energy saving components, etc.

As applied to vehicles and facilities, to furnish with new parts or equipment to constitute a deliberate modification of the original design (as contrasted with an overhaul or a replacement in kind).

An item that replaces components originally installed on equipment; a modification to in-service equipment.

(n) a component or accessory added to something after it has been manufactured(n) the act of adding a component or accessory to something that did not have it when it was manufactured(v) provide with [..]

To provide with a component not fitted to it during manufacturing. Comfort, safety, durability, and savings are all great reasons to consider a retrofit for your project today.

Installation or replacement of equipment at a plant after the plant has been built.

Installation or replacement of equipment at an existing power plant.

replacing old and/or inefficient lighting technology with new lamps, ballasts, luminaires, or equipment that improves the efficiency or safety of the lighting system.

To update the components of an existing building to meet code (or other regulatory) requirements. (Ontario Ministry of Municipal Affairs and Housing, Canada, 1982) To bring the building up to higher standards, with respect particularly to energy efficiency, security, fire protection and modern amenities. The energy conservation aspect of a retrofit [..]

Replacing select components of a lighting system or product to save energy. A lighting upgrade can include any strategy that reduces the system's energy use.

Addition of a pollution control device on an existing facility without making major changes to the generating plant. Also called backfit.

Addition of a pollution control device on an existing facility without making major changes to the generating plant. Also called backfit.

Addition of a pollution control device on an existing facility without making major changes to the generating plant.

Changing a location to make sure that the design of the film is seamless.

"Retrofit" means to equip a diesel engine with new emissions-reducing parts or technology after the manufacture of the original engine. A retrofit must use the greatest degree of emissions r [..]

Installation of a building energy system or building water system alternative in an existing Federal building (USAID Automated Directives System - ADS - Chapter 528).

to replace existing items with updated items.

Retrofit refers to the addition of new technology or features added to older systems.

Retrofit is an album by Blackpool post-punk/electro band Section 25 and released by LTM Recordings on 14 September 2010.

Retrofit is a weight loss company for business professionals based in Chicago, Illinois. It is known for its use of technology to assist people with weight loss and track their progress such as using [..]