Retrofit

あとづけ

atozuke

(act of supplying a device, structure, etc., with new components or parts that were not previously available or installed — see also retrofitting)

後付け

(act of supplying a device, structure, etc., with new components or parts that were not previously available or installed — see also retrofitting)

あとづけする

atozuke suru

((transitive) to supply (a device, structure, etc.) with new components or parts that were not previously available or installed — see also modernize)

後付けする

((transitive) to supply (a device, structure, etc.) with new components or parts that were not previously available or installed — see also modernize)