From Longman Dictionary of Contemporary Englishmphmph /ˌem piː ˈeɪtʃ/ TMTT (miles per hour) used to describe the speed of something, especially a vehicle or the wind high winds of up to 140 mphFrom Longman Business Dictionarymphmph miles per hour; used to describe the speed of a vehicleThe car reaches 60 mph in eight seconds.
