Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
a white, crystalline salt, Na(NH)HPO·4HO, used as a reagent in blowpipe analysis because it forms characteristically colored compounds when fused with salts and oxides of metals
Used by arrangement with John Wiley & Sons, Inc.
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A white crystalline salt of phosphorus, HNaNH4PO4·4H2O, used in blowpipe analysis of minerals to test for the presence of certain metals.