/ Dictionary / Index H household ammonia: Meaning and Definition of Find definitions for: house'hold ammo'nia Pronunciation: [key] diluted ammonia, often having a small quantity of detergent, used in the home for cleaning. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. household household art Related Content Daily Word Quiz: benevolent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language