from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A white crystalline salt of phosphorus, HNaNH4PO4·4H2O, used in blowpipe analysis of minerals to test for the presence of certain metals.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A white salt, extracted from urine; once used in the preparation of phosphorus, and used in analytical tests for some metals; ammonium sodium hydrogenphosphate (NH4)NaHPO4.
from the GNU version of the Collaborative International Dictionary of English
- adj. a white crystalline substance obtained by mixing solutions of sodium phosphate and ammonium phosphate, and also called hydric-sodic-ammonic-phosphate. It is a powerful flux, and is used as a substitute for borax as a blowpipe reagent in testing for the metallic oxides. Originally obtained by the alchemists from human urine, and called sal microcosmicum.
- n. See under Microcosmic.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a white salt present in urine and used to test for metal oxides
From its alchemical name sal microcosmicum (Wiktionary)