/ Dictionary / Index S standard error: Meaning and Definition of Find definitions for: stand'ard er'ror Pronunciation: [key] — Statistics. Statistics. the standard deviation of a distribution of a sample statistic, esp. when the mean is used as the statistic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Standard English standard gauge Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language