/ Dictionary / Index W work function: Meaning and Definition of Find definitions for: work' func"tion Pronunciation: [key] the least energy necessary to free an electron from a metal surface. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. work force work-furlough Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language