/ Dictionary / Index B Becquerel effect: Meaning and Definition of Find definitions for: Becquerel' effect" Pronunciation: [key] — Physics. Physics. the electromotive force produced by the unequal illumination of two identical electrodes placed in an electrolyte. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Becquerel Becquerel rays Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language