A throttle which automatically controls the flow of fuel to an engine or motor; specifically one in an aircraft which serves to maintain a chosen flight parameter, such as speed or thrust.
Origin
1940s.
Definition of autothrottle in US English:
autothrottle
nounˈɔːtə(ʊ)ˌθrɒtl
A throttle which automatically controls the flow of fuel to an engine or motor; specifically one in an aircraft which serves to maintain a chosen flight parameter, such as speed or thrust.