/ Dictionary / Index S sodium ammonium phosphate: Meaning and Definition of Find definitions for: so'dium ammo'nium phos'phate Pronunciation: [key] — Chem. Chem. a colorless, odorless, crystalline, water-soluble solid, NaNHHPO&multiplydot;4HO, originally obtained from human urine: used as a blowpipe flux in testing metallic oxides. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sodium amide sodium arsenite Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language