/ Dictionary / Index W whitening: Meaning and Definition of Find definitions for: whit•en•ing Pronunciation: (hwīt'n-ing, wīt'-), [key] — n. a preparation for making something white; whiting. the act or process of making or turning white. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: whitening (Thesaurus) White Nile white noise Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language