/ Dictionary / Index E em pica: Meaning and Definition of Find definitions for: em' pi"ca Pronunciation: [key] — Print. Print. a unit of measurement equal to about one-sixth of an inch (4 mm). Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. emphysema empire Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language