/ Dictionary / Index E exponential curve: Meaning and Definition of Find definitions for: ex'ponen'tial curve' Pronunciation: [key] the graph of an equation of the form y = ba, where a and b are positive constants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. exponential exponential function Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language