/ Dictionary / Index E efph: Meaning and Definition of Find definitions for: efph Pronunciation: [key] equivalent full-power hour. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. EFM eft Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language