mph mpeg • m-ple point · · · Info · Definitions · Synonyms · Characters · · mph · · Text Latin · · Script 3 · · Length 1 · · Syllables Definitions · · · (noun) the ratio of the distance traveled (in miles) to the time spent traveling (in hours). Synonyms: miles per hour. · · Noun Definition 1 (noun) a speedometer reading for the momentary rate of travel. Synonyms: miles per hour. · · Noun Definition 2 Synonyms · · · miles per hour · · Synonym 1 Characters · · h latin small letter h U+0068 m latin small letter m U+006D p latin small letter p U+0070