/ Dictionary / Index F fatigue life: Meaning and Definition of Find definitions for: fatigue' life" Pronunciation: [key] the number of applications of a given stress to which a sample of metal can be subjected before failing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fatigued fatigue limit Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language