C1verbformalenvironmenturban
US/ˈret.roʊ.fɪt/
UK/ˈret.rəʊ.fɪt/
to add new equipment or technology to an old building or machine so it works better
In context
The city plans to retrofit older office towers with better insulation.
Engineers retrofitted the factory with solar panels to cut its energy bills.
It is cheaper to retrofit existing homes than to build new ones.
Words that go with retrofit
verb + noun
- retrofit a buildingOwners must retrofit a building to meet the new standards.
- retrofit homesThe program helps retrofit homes with heat pumps.
- retrofit existing buildingsThe law requires us to retrofit existing buildings.
- retrofit a factoryThe owners plan to retrofit a factory built in the 1960s.
verb + preposition
- retrofit with insulationThey retrofit old houses with insulation.
noun + noun
- energy retrofitAn energy retrofit can cut heating costs by half.