Definitions

1. verb

to modify or equip an existing structure, system, or process with new or improved features or technologies, often in order to increase efficiency, reduce costs, or improve performance.

“The city will retrofit its public buildings to make them more energy-efficient.”

2. noun

the act or process of modifying or equipping an existing structure, system, or process with new or improved features or technologies.

“The retrofit of the old factory took several months to complete.”

3. noun

a system or device that has been modified or equipped with new or improved features or technologies.

“The company developed a retrofit system to increase the fuel efficiency of older vehicles.”

4. noun

a modification or addition made to an existing structure, system, or process with new or improved features or technologies.

“The building’s retrofit included the installation of new solar panels and a rainwater harvesting system.”