/ Dictionary / Index F Fourier series: Meaning and Definition of Find definitions for: Fou'rier se"ries Pronunciation: [key] — Math. Math. an infinite series that involves linear combinations of sines and cosines and approximates a given function on a specified domain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Fourierism Fourier transform Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language