derate
verb
de·rate (ˌ)dē-ˈrāt 
derated; derating; derates
transitive verb
: to lower the rated capability of (something, such as an electrical or mechanical apparatus) because of deterioration or inadequacy
Example Sentences
Recent Examples on the Web In 2014, Jalopnik's Rob Holland tried taking a Model S around the track, only for the battery to derate about three minutes in. 
Jonathan M. Gitlin, Ars Technica, 6 Sep. 2019 The wheels are then derated to – that is, run at – 50 percent of maximum speed. Charles Platt, WIRED, 1 May 2000
Jonathan M. Gitlin, Ars Technica, 6 Sep. 2019 The wheels are then derated to – that is, run at – 50 percent of maximum speed. Charles Platt, WIRED, 1 May 2000 Word History
First Known Use
1947, in the meaning defined above