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