Meaning of “mph” in the English Dictionary

(Definition of “mph” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"mph" in American English

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mphplural noun [ C ]

plural mph

abbreviation for miles per hour (= the number of miles a vehicle travels in one hour, a measure of its speed):

The speed limit is 55 mph.

(Definition of “mph” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"mph" in Business English

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abbreviation for miles per hour: a way of calculating the speed at which a vehicle or plane is travelling or can travel:

30/150/200, etc. mph 'Bullet trains' in Europe and Asia can achieve a cruising speed of 185 mph.

(Definition of “mph” from the Cambridge Business English Dictionary © Cambridge University Press)