/ Dictionary / Index M mph: Meaning and Definition of Find definitions for: mph Pronunciation: [key] miles per hour. M.Ph. Pronunciation: [key] Master of Philosophy. M.P.H. Pronunciation: [key] Master of Public Health. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mph (Thesaurus) mpg Mphahlele Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language