/ Dictionary / Index A attention span: Meaning and Definition of Find definitions for: atten'tion span" Pronunciation: [key] the interval during which an individual can concentrate, as on a single object, idea, or activity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. attention line, attentive Related Content Daily Word Quiz: sumptuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language