/ Dictionary / Index W wastewater: Meaning and Definition of Find definitions for: waste•wa•ter Pronunciation: (wāst'wô"tur, -wot"ur), [key] — n. water that has been used in washing, flushing, manufacturing, etc.; sewage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: wastewater (Thesaurus) waster waste well Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language