/ Dictionary / Index W whitener: Meaning and Definition of Find definitions for: whit•en•er Pronunciation: (hwīt'n-ur, wīt'-), [key] — n. a preparation for making something white, as a bleach, dye, or polish: a bottle of shoe whitener. a person or thing that whitens. a person who applies whitener, as in a manufacturing process. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: whitener (Thesaurus) whiten whiteness Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language