/ Dictionary / Index T truth-function: Meaning and Definition of Find definitions for: truth-func•tion Pronunciation: (trth'fungk"shun), [key] — n. Logic. a statement so constructed from other statements that its truth-value depends on the truth-values of the other statements rather than on their meanings. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. truthful truth or consequences Related Content Daily Word Quiz: abscond Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language